Yes, Xiang Mantang had been back from Kunlun Mountain for some time.
But he had yet to take Chen Qianqian's body for testing to see if she really was his sister, Xiang Yinxui.
It wasn't that he was too busy or had forgotten about it.
Rather...
He was intentionally avoiding it!
Just as he avoided the death of Mu Jinyu, he was also avoiding the death of Chen Qianqian, a girl who bore a striking resemblance to his own sister!
He was terrified that if the test results came back and Chen Qianqian turned out to be Xiang Yinxui, it would push him even further into despair.
It would mean that he truly killed his own sister whom he had been searching for, for many years.
As it was, he could still deceive himself and tell himself that he had only killed an assassin called by Shen Cangsheng, just a girl who happened to look somewhat like his sister.
He would rather deceive himself than seek out the truth.
After all, sometimes the truth is often more cruel and unbearable.