Lines of single/X-LV-21.lua from check-in 7d43f9de8f that are changed by the sequence of edits moving toward check-in 2fbfe4850f:

                         1: --[[message
                         2: 新手教学
                         3: ]]
                         4: Debug.SetAIName("顽雨沉风")
                         5: Debug.ReloadFieldBegin(DUEL_ATTACK_FIRST_TURN+DUEL_SIMPLE_AI,4)
                         6: Debug.SetPlayerInfo(0,8000,0,0)
                         7: Debug.SetPlayerInfo(1,500,0,0)
                         8: 
                         9: local g02=Debug.AddCard(46986414,0,0,LOCATION_MZONE,2,POS_FACEDOWN_DEFENSE)
                        10: local g12=Debug.AddCard(59380081,1,1,LOCATION_MZONE,2,POS_FACEUP_ATTACK)
                        11: local m01=Debug.AddCard(93747864,0,0,LOCATION_SZONE,1,POS_FACEDOWN)
                        12: --~ local m02=Debug.AddCard(52503575,0,0,LOCATION_SZONE,2,POS_FACEDOWN)
                        13: Debug.ReloadFieldEnd()
                        14: aux.BeginPuzzle()
7d43f9de8f 2023-07-15   15: fun["开局说明"]()
7d43f9de8f 2023-07-15   16: 
7d43f9de8f 2023-07-15   17: 
7d43f9de8f 2023-07-15   18: 
7d43f9de8f 2023-07-15   19: Debug.ShowHint("尝试一下反转召唤+反转")