It is very important to establish the proper credit of Zhou because it is important. The point is that Zhou has not get the right credit that he deserved. You are not in the field, and therefore do not really know the situation. Presently, I am in a position to clarify the credit of Zhou because I have already passed his level in general relativity.

Such an attitude is precisely Yang need a lesson to be more objective. He will learn to respect Zhou in either a soft way or a hard way. He may enjoy his gift, but he should not continue to mislead others. There is few, if any, free lunch in the world.