C123 A child's trick

Yan Qingqing had never thought that all the methods she could think of would be within Leng Xinhao's grasp. Of course, she would not have thought that she had learned all these from her father, Yan Song, who had learned them from Leng Zhenwei.

But at the same time, Leng Xinhao was also taught by Leng Zhenwei. In fact, Leng Xinhao was actually Leng Zhenwei's last disciple. From this sequence