At the user level, Zhihu is the highest, Baidu knows the second, and Wukong is the lowest, which can be seen from the answers and comments of some questions.
Most people in Zhihu are clear-headed, and there are liars, but their knowledge level and thinking ability are still outstanding. Secondly, Baidu knows that there is not much difference between the two. The worst part is Wukong's question and answer. The user level is very low, but he likes to pretend.