Because if Peking University is called "Beijing", it will cause ambiguity and make people misunderstand that it refers to the capital Beijing.

Tsinghua University is called "Tsinghua". First of all, no other organizations compete with it, saying that there will be no misunderstanding in Tsinghua.

If it is called "Qing Da" instead and read from right to left, wouldn't it be the Qing Dynasty of the feudal dynasty? This is not good.