Xu Maogong sent Wang Bodang and Xie Yingdeng to supervise, and Tie Zijian took Xu and Qin Qiong's letter to Beiping to invite Luo Cheng. Luo Cheng and his mother made up a nonsensical story about going to Tai'an Shenzhou to protect the Lord Luo. Luo Cheng He took six men along with Wang Bodang and the others, and they set out. In the inn, he met "Double Barrel" General Ding Yanping. Luo Cheng recognized Ding Yanping as his foster father. Luo Cheng learned from Ding Yanping the trick of breaking two guns with a single shot: double-barrel shoot, single-barrel pierce, double-barrel hold, single-barrel pull. The first word determines the marksmanship; then spin around and pin the elbows. Luo Cheng went to Wagang Mountain to offer respect to his brothers, drink and toast.
田连元- 罗成别传 - 有声书 (The Biography of Luo Cheng - AUDIOBOOK)