KNOWLEDGE NOTES

Knowledge Notes

Explore curated knowledge, course notes and methods, with their existing content and sources preserved.

This index lists complete English editions. Additional Chinese notes and bilingual updates remain available in the Chinese index.

350knowledge notes
Business & Entrepreneurship / Cross-source synthesis

Research Methodology / OSCAR / Research Hacker (Cross-Author Thematic Synthesis)

Integration of research methodologies from 3 perspectives. yitang Truman + Zhang Lei OSCAR five-step framework (Objective/Scope/Channel/Analyze/Report) + Research Hacker systematic approach + exploratory arsenal 5 channels + 13 IPO prospectuses + Zhang Lei nursing home 5-sheet empirical study / Wang Kai RSI using research as a ruler (competitive analysis + cross-platform benchmarking + AI interrogation for decision-making) / Wang Huiwen 60-75-85 tier system (research the present / predict the endgame / formulate strategy). Covers research tiers, 5-channel intelligence collection, expert interview SOP, user interview SOP

Market researchCompetitor analysisResearch methodsEnglish edition
Business & Entrepreneurship / Yitang Course Notes

Yitang / Complete System of Intelligence Research + Lean Experimentation

Complete notes for Yitang's 01 Entrepreneurship Required Course: "Intelligence Research" (5 docx + 13 PDF financial reports + Zhang Lei's nursing home data) + "Lean Experimentation" (4 docx). Covers ① OSCAR research model (initiated by Truman in 2018, third round of AI-powered upgrade in 2026) ② Research hacker systematic + exploratory arsenal ③ Expert interview + user interview SOPs ④ 13 real Hong Kong stock IPO prospectuses (Xiaomi/Meituan/Kuaishou/Nayuki/Xiaopeng/Trip/Baidu/Bilibili/Pop Mart/NetEase/New Oriental/Autohome/Jiumaojiu) ⑤ Lean startup — the six "worst" wastes + 4 principles + stripping assumptions + MVP design + systematic testing. Taught by Truman and Zhang Lei

Market researchUser interviewsLean experimentationEnglish edition