Perfect plan?

Although Tsa Xang had said this, there was actually a reason why he did not poison Tsarayu and only made him fall asleep.

He could not kill Tsarayu in the Tsa Clan Mansion as things would have gotten worse if someone had found Tsarayu's dead body. That might have somehow resulted in people getting to him, so he had to do it outside. And for that very reason, he needed to bring Tsarayu outside the Tsa Clan's mansion first.

Tsa Xang knew Tsashi never went outside the Tsa Clan mansion since his accident. In fact, in the last four years, he had not gone outside even once, so Tsa Xang knew that he would not go with him even if Tsa Xang had invited him.

On the other hand, even if he killed him and tried to get his body out of the Tsa Clan through his connections, it would be a dangerous situation if anyone saw him moving Tsashi's dead body outside and, on checking, found out that he was dead. If that happened, Tsa Xang would be the next person to die as Tsarayu's grandfather Tsaki would bur