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Model Perspective
Model Perspective
Mar 28, 2026 · Industry Insights

Why Are Biology and Geography Dropped from China’s High‑School Entrance Exam? A Structured Analysis

Recent policy changes in several Chinese provinces will exclude biology and geography from the high‑school entrance exam, prompting a detailed framework that evaluates each subject’s knowledge utility, discriminative power, timeliness, and learning cost to explain why these two subjects rank lowest in overall exam value.

Chinabiologyeducation policy
0 likes · 8 min read
Why Are Biology and Geography Dropped from China’s High‑School Entrance Exam? A Structured Analysis
macrozheng
macrozheng
Nov 9, 2024 · R&D Management

Why Big Tech Keeps R&D in Tier‑1 Cities: Talent, Innovation, and Cost Factors

The article explains why major internet companies rarely relocate their research and development centers to second‑ or third‑tier cities, highlighting the advantages of tier‑1 talent pools, dense innovation ecosystems, high‑cost‑of‑living filtering, and superior geographic positioning for global operations.

Cost of LivingInnovationR&D management
0 likes · 7 min read
Why Big Tech Keeps R&D in Tier‑1 Cities: Talent, Innovation, and Cost Factors