Lines of single_doc/卡组测试教程.md from check-in e194bf0b15 that are changed by the sequence of edits moving toward check-in 3f356dbfe7:
1: <details> 2: <summary> 3: 前言 4: </summary> 5: 6: </details>
1: <details> 2: <summary> 3: 前言 4: </summary> 5: 6: </details>