Yang is not a liar! Shame on you

You don't need to try to do this to him in order to defend the commies that murdered millions.

Shame on you! Millions of people died of starvation, it is undebatable. Whose fault was it? It's Mao and his cohorts and

the culture of the communist party itself. There's no regard of human lives from their POV!

If the author of the memoir couldn't remember some of the details of his personal life in the past, it's normal.

It doesn't make him a liar.