Origin for each line in single_doc/NH-02.md from check-in c269f4bc1e:

5c22054551 2023-07-07    1: % NH-02
5c22054551 2023-07-07    2: 
fe8cffa25f 2023-07-07    3: # 规避副作用
fe8cffa25f 2023-07-07    4: 
c269f4bc1e 2023-07-07    5: 选用具有强制性效果的卡片，比如「娱乐决斗」。