Solving the signature: 1 is Liu Bei's Wu Dong daughter-in-law 2 is Zhao Kuangyin's Shuidong River. What I want is to study.

Ten scientists studied the problem. They did solve it. But the moment they solve this problem is their last second in this world ... who can prove that there are ghosts in the world? Who can prove that there are no ghosts? Where will they go after they die? It's best not to think about this question. Anyway, you came into this world unconsciously. Then enjoy it and do what you like. When you leave this world, you will naturally know the answer.