https://findns94.github.io Martin Zhao's Blog Mon, 27 Jul 2026 14:45:09 GMT https://validator.w3.org/feed/docs/rss2.html https://github.com/jpmonette/feed zh-CN Martin Zhao 2026 https://findns94.github.io/posts/backend-developer-side-hustle-ai-era/ https://findns94.github.io/posts/backend-developer-side-hustle-ai-era/ Mon, 27 Jul 2026 23:00:00 GMT **Key Takeaways** > - AI coding tools have compressed development time by 55% on average and up to 12x for specific security fixes, making one-person products viable at a fraction of the historical cost ([GitHub Octoverse 2024](https://github.blog/news-insights/octoverse/octoverse-2024/)). > - The global SaaS market is projected to reach $919.98 billion by 2030 (CAGR 17.7%), with AI-integrated products capturing a disproportionate share of new growth ([Grand View Research](https://www.grandviewresearch.com/industry-analysis/software-as-a-service-saas-market-report), 2024). > - Only 2-5% of developer side projects reach $10K+ MRR, but the median time to first revenue for successful projects is just 3-6 months ([Indie Hackers](https://www.indiehackers.com), 2024). > - Backend developers have a structural advantage: API-first thinking, data modeling skills, and infrastructure experience map directly onto AI-native product development. > - The biggest risk is not failure — it is building something nobody wants. Pre-selling before coding is the single most effective de-risking tactic.]]> AI Career Software Engineering https://findns94.github.io/posts/kernel-contribution-guide-ai-era/ https://findns94.github.io/posts/kernel-contribution-guide-ai-era/ Thu, 23 Jul 2026 23:30:00 GMT Linux Kernel Open Source https://findns94.github.io/posts/chinese-soe-it-bottlenecks-llm-restrictions/ https://findns94.github.io/posts/chinese-soe-it-bottlenecks-llm-restrictions/ Thu, 23 Jul 2026 23:00:00 GMT **Key Takeaways** > - In 2026, over 98% of China's central SOEs have launched digital transformation programs, but fewer than 15% have deployed LLMs in production due to confidentiality constraints ([SASAC](http://www.sasac.gov.cn/), 2026). > - China's generative AI market is projected to exceed $1.5 trillion by 2030, with domestic models (DeepSeek, Qwen, ERNIE) capturing over 80% of the SOE and government segment ([IDC](https://www.idc.com/), 2025). > - The "信创" (IT Application Innovation) policy mandates full domestic替换 of core IT infrastructure in government and SOE systems by 2027, creating a $50 billion replacement market ([CCID Consulting](https://www.ccidconsulting.com/), 2025). > - SOE IT bottlenecks are shifting from hardware procurement to three new constraints: domestic GPU compute scarcity, proprietary data silos, and the talent gap in self-managed AI deployment. > - Organizations that invest in private AI infrastructure and internal MLOps capabilities today will define the next decade of China's state-sector productivity.]]> AI Enterprise Technology China Tech https://findns94.github.io/posts/ease-father-daughter-relationship-chinese-family/ https://findns94.github.io/posts/ease-father-daughter-relationship-chinese-family/ Thu, 23 Jul 2026 22:45:00 GMT **Key Takeaways** > - Chinese fathers and daughters talk often (74.6% weekly) but rarely go deep (12.3% meaningful talks monthly) — the gap is cultural, not personal ([China Youth Daily](https://www.chinayouth.cn/), 2024). > - 81.3% of Chinese parents want emotional closeness with their children but say they "don't know how to start" ([Beijing Normal University Faculty of Psychology](https://psych.bnu.edu.cn/), 2024). > - Side-by-side activities (walking, cooking, driving) outperform face-to-face talks for emotionally reserved fathers — shared action lowers the pressure to perform intimacy. > - Healing doesn't require him to change first; small shifts in your approach can reshape the entire dynamic.]]> Family Relationships Culture https://findns94.github.io/posts/how-to-create-great-travel-vlog-beginners-aesthetics/ https://findns94.github.io/posts/how-to-create-great-travel-vlog-beginners-aesthetics/ Thu, 23 Jul 2026 14:30:00 GMT **Key Takeaways** > - In 2026, 70% of travelers watch travel video before booking, and more than 280 million people engage with travel videos monthly — the audience is there, but only well-crafted content earns the view ([ThinkGoogle Travel Insights](https://business.google.com/en-all/think/), 2026). > - Aesthetic travel vlogs rest on four pillars: composition, color grading, intentional movement, and pacing. Master these before you buy expensive gear. > - Audio matters more than video quality. Viewers forgive mediocre visuals; they click away from bad sound. Budget at least 25% of your gear spend on audio. > - A three-act story arc (arrival, exploration, reflection) turns random clips into a narrative that holds attention past the first 30 seconds.]]> Travel Video Photography https://findns94.github.io/posts/shanghai-housing-market-long-term-trends-international-cycles/ https://findns94.github.io/posts/shanghai-housing-market-long-term-trends-international-cycles/ Wed, 22 Jul 2026 22:30:00 GMT Housing Finance Shanghai https://findns94.github.io/posts/api-gateway-humanities/ https://findns94.github.io/posts/api-gateway-humanities/ Sun, 19 Jul 2026 22:00:00 GMT **Key Takeaways** > - An API gateway is the internet's gatekeeper: one entry point that controls, translates, and protects traffic (Lewin 1947). > - In 2025, 98% of organizations faced API security problems (Salt Security, 2024). > - Four jobs — authentication, rate limiting, translation, logging — map onto ideas you know: borders, bouncers, switchboards. > - A gateway is never neutral; it's policy wearing the mask of infrastructure.]]> API Software Architecture Technology https://findns94.github.io/posts/witcher-3-greatest-rpg-21st-century/ https://findns94.github.io/posts/witcher-3-greatest-rpg-21st-century/ Thu, 16 Jul 2026 22:20:06 GMT **Key Takeaways** > - In 2026, The Witcher 3 has sold more than 50 million copies — one of the best-selling RPGs ever — and holds more than 260 Game of the Year awards, making it one of the most decorated games in history ([CD Projekt investor reports via Wikipedia](https://en.wikipedia.org/wiki/The_Witcher_3:_Wild_Hunt), 2026). > - It scores 93 on Metacritic (PC), 94 on current-gen consoles, and 95% on OpenCritic — elite marks — while its Blood and Wine expansion alone scores 92, higher than most full games ([Metacritic](https://www.metacritic.com/game/pc/the-witcher-3-wild-hunt/), 2026). > - Its side quests are widely considered the genre's gold standard: choice-driven, morally grey, and written to the same quality as many games' main stories. Personal playthrough confirms it rewards slow, attentive play.]]> RPG Gaming The Witcher 3 https://findns94.github.io/posts/ai-agent-enterprise-workflow-transformation-2025/ https://findns94.github.io/posts/ai-agent-enterprise-workflow-transformation-2025/ Thu, 16 Jul 2026 21:31:42 GMT **Key Takeaways** > - In 2025, 81% of enterprise leaders expect AI agents to be moderately or extensively integrated into company strategy within 12–18 months, and 46% already use agents to fully automate workflows ([Microsoft Work Trend Index](https://www.microsoft.com/en-us/worklab/work-trend-index), 2025). > - McKinsey estimates generative AI could add \$2.6–\$4.4 trillion annually across 63 analyzed use cases, but only 1 in 3 organizations have scaled AI beyond pilot stage ([McKinsey](https://www.mckinsey.com/capabilities/mckinsey-digital/our-insights/the-state-of-ai), 2025). > - Klarna's AI assistant handled 2.3 million conversations in its first month — equivalent to 700 full-time agents — reducing resolution time from 11 minutes to under 2 minutes ([Reuters](https://www.reuters.com/technology/klarnas-ai-assistant-handled-two-thirds-customer-service-conversations-2025-02-25/), 2025). > - API-first architecture is the non-negotiable foundation: without programmatic access to enterprise systems, agents cannot execute transactions, query data, or orchestrate multi-step workflows.]]> AI Machine Learning Automation https://findns94.github.io/posts/shanghai-school-district-housing-2026/ https://findns94.github.io/posts/shanghai-school-district-housing-2026/ Thu, 16 Jul 2026 20:09:03 GMT **Key Takeaways** > - Shanghai school district housing premiums have narrowed from a peak of 40–50% to 15–35%, and the compression is still underway (Beike Research Institute / CRIC, 2024–2025). > - Primary school enrollment pressure has eased noticeably since 2025—the 2024–25 school year saw roughly 750,000 enrolled students, down 14% from the 2021 peak of 871,000 (Ministry of Education, 2025). > - Teacher rotation covered 80% of compulsory education schools in 2025, with an annual rotation rate of no less than 10–15% and backbone teachers accounting for ≥20% (Shanghai Municipal Education Commission, 2025). > - School district housing yields a gross rental return of just 1.2–1.5%, well below the 1.8–2.2% on non-district newer homes (China Index Academy, 2026). > - Young couples with both owner-occupier and school district needs should prioritize newer homes in mid-tier school districts, reducing the policy and liquidity risks of old, small, run-down units.]]> Housing Education Shanghai https://findns94.github.io/posts/young-children-ai-education-shanghai/ https://findns94.github.io/posts/young-children-ai-education-shanghai/ Wed, 15 Jul 2026 22:47:02 GMT AI Education Shanghai https://findns94.github.io/posts/how-to-choose-investment-strategy-in-china-for-young-couples-shanghai/ https://findns94.github.io/posts/how-to-choose-investment-strategy-in-china-for-young-couples-shanghai/ Tue, 14 Jul 2026 22:32:23 GMT Finance Investment Shanghai https://findns94.github.io/posts/shanghai-house-buying-strategy-young-couples/ https://findns94.github.io/posts/shanghai-house-buying-strategy-young-couples/ Tue, 14 Jul 2026 20:09:10 GMT **Key Takeaways** > - Shanghai rental yields hover around 1.4–1.8%, well below what you can earn on a simple money-market fund — so renting is a stronger pure-financial play than many couples assume ([JLL China Residential Report](https://www.jll.com/en-china), 2025). > - The middle ring (Putuo, Hongkou, Yangpu, part of Pudong) offers the best mix of price liquidity, metro connectivity and livability for young couples wary of exurban lock-in. > - Shanghai's first-home mortgage rate was roughly 3.50–3.60% by early 2026 (5Y LPR minus basis points), historically low by Chinese standards and a genuine window for well-qualified buyers. > - The winning strategy for most couples is a 5–10 year committed "buy and live" plan in the middle ring, backed by a joint-housing-fund loan and a cash buffer that survives a six-month job-loss scenario.]]> Housing Finance Shanghai https://findns94.github.io/posts/submit-linux-kernel-patch/ https://findns94.github.io/posts/submit-linux-kernel-patch/ Tue, 14 Jul 2026 09:00:00 GMT Linux Kernel Open Source https://findns94.github.io/posts/fstrace-filter-parent-function/ https://findns94.github.io/posts/fstrace-filter-parent-function/ Sun, 07 May 2023 20:40:54 GMT Linux Debugging Kernel https://findns94.github.io/posts/learn-linux-step-1/ https://findns94.github.io/posts/learn-linux-step-1/ Sun, 05 Dec 2021 20:22:30 GMT Linux Kernel OS https://findns94.github.io/posts/qemu-aarch64-linux-in-wsl/ https://findns94.github.io/posts/qemu-aarch64-linux-in-wsl/ Sun, 12 Sep 2021 22:15:59 GMT Linux Emulation Arm https://findns94.github.io/posts/learn-arm-assembly-language/ https://findns94.github.io/posts/learn-arm-assembly-language/ Sun, 16 May 2021 20:25:50 GMT Arm Assembly Debugging https://findns94.github.io/posts/what-happens-after-access-address/ https://findns94.github.io/posts/what-happens-after-access-address/ Sun, 21 Feb 2021 19:34:02 GMT #include int main() { unsigned long long *x = (unsigned long long)0x0000007000003000; int *p = (int*)mmap(0x0000007000003000, sizeof(unsigned long long) * 10, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); printf("before write, x = %llu\n", *x); *x = 1; printf("after write, x = %llu\n", *x); } ``` If the user-space virtual address `0x0000007000003000` is not mapped in advance via mmap with read and write permissions, a `Segmentation fault (core dumped)` will occur, because `0x0000007000003000` is not managed as a vma (virtual memory area) allocated through mmap or brk in the process's virtual address space, and thus the virtual address is not accessible at this point. The output after compilation is as follows. ``` before write, x = 0 after write, x = 1 ``` As can be seen, a new value was successfully written to the user-space virtual address `0x0000007000003000`.]]> OS Memory Linux https://findns94.github.io/posts/kkbox/ https://findns94.github.io/posts/kkbox/ Fri, 21 Jun 2019 21:23:16 GMT Data Mining Recommendation https://findns94.github.io/posts/dao-validation/ https://findns94.github.io/posts/dao-validation/ Mon, 22 Apr 2019 22:41:57 GMT Blockchain Security Formal Verification https://findns94.github.io/posts/face/ https://findns94.github.io/posts/face/ Wed, 03 Apr 2019 22:49:31 GMT Deep Learning Computer Vision https://findns94.github.io/posts/risk/ https://findns94.github.io/posts/risk/ Thu, 28 Mar 2019 21:36:21 GMT Machine Learning Finance https://findns94.github.io/posts/blockchain/ https://findns94.github.io/posts/blockchain/ Tue, 19 Mar 2019 21:14:51 GMT Blockchain Security https://findns94.github.io/posts/hmm/ https://findns94.github.io/posts/hmm/ Tue, 19 Mar 2019 20:13:07 GMT NLP Machine Learning https://findns94.github.io/posts/rnn-adversarial/ https://findns94.github.io/posts/rnn-adversarial/ Sat, 09 Mar 2019 23:14:03 GMT Deep Learning NLP Security https://findns94.github.io/posts/confu/ https://findns94.github.io/posts/confu/ Thu, 28 Feb 2019 23:27:41 GMT Concurrency JVM Testing https://findns94.github.io/posts/recommendation/ https://findns94.github.io/posts/recommendation/ Sat, 23 Feb 2019 20:59:16 GMT Data Mining Recommendation https://findns94.github.io/posts/sitting_posture/ https://findns94.github.io/posts/sitting_posture/ Fri, 22 Feb 2019 20:00:00 GMT Deep Learning Computer Vision Health