datawhalechina/hello-agents Reaches 42,588 Stars — Comprehensive Agent-Building Tutorial Covering ReAct, LangGraph, Agentic RL, and Multi-Agent Systems

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Datawhale China's open-source tutorial 'Build Intelligent Agents from Scratch' has surged to 42K stars. Five-part curriculum covers fundamentals through advanced techniques: custom HelloAgents framework, ReAct/LangGraph paradigms, context engineering, memory systems, agentic RL training (SFT to GRPO), and real-world projects including multi-agent travel assistant, autonomous research agent, and cyber town social simulation. Available in Chinese and English.