Still, Zhang Jiren wasn't sure about the motive of the Zhang family as well as the Tangs. Aside from Zhang Xianzhe, was anyone else aware of his real identity? He should identify who the enemies are first before he could make a move.
Zhang Jiren also knew that he needed to be careful not to give anyone a chance to suspect that he was aware of the truth regarding his origin and how he was related to Yan Qiuyu and Tang Moyu.
What's more, was there a possibility that Zhang Xianzhe took him in to use as a hidden card against the Tang family? What were the chances that he was raised as a Zhang in order for him to go against Tang Moyu someday?
The thought shook him to the core. How despicable! He would never allow them to use him to hurt his only sister!