In which episode was Zhang Xuecheng killed?

Jong Zhang Xueliang killed Zhang Xuecheng in the 42nd episode.

Plot introduction

Zhang Xueliang brought the Zhang family together, made Zhang Xuecheng's affairs public and called Zhang Xuecheng a coward. He said that he always remembered his father's entrustment, and he could tolerate his rebellion with Zhang Zongchang everywhere, but he could not accept that he took refuge in the Japanese and became a sinner of the country. Zhang Xuecheng's mother was saddened and ashamed, saying that she could write to Xuecheng and ask Zhang Xueliang to stop and let him live. Zhang Xueliang knelt down and said that she had ordered sanctions against Zhang Xuecheng. Today's party is to give an account to the Zhang family.