He was sharp in sussing people out except where his own son was concerned. So, his disdain and disrespect for TPL was valid.
Li Shengwu: "I am not sure why my grandfather choose his own son and was willing to have his own son go into politics and become prime minister but all I can say is that there are a lot of human beings.
If there is one person in the world you are going to overestimate, it is your own child."