After all, in today's academic world, there are only two top and most famous people who have the habit of leaving such an important proof process on a preprint website like arxiv.

One is Professor Perleman from Tsarist Russia, and the other is Professor Xu Chuan from China.

There is no doubt who wrote this paper.

However, it is precisely because of this that the closer he is to the answer to this question and the closer he is to the end, the more afraid and cautious he becomes.

He was afraid that after crossing this long river of time, what awaited him was not the light of hope but the dark clouds in the sky; he was afraid that in the last days of his life, he would still leave with regrets.

Although based on that person's habits, this possibility is slim...

Time passed by, and when the sun outside the window gradually faded into the horizon, the paper he held tightly in his hand finally turned to the last page.

The pursuit of answers throughout my life found my greatest satisfaction at this moment.

When he saw the solution obtained by that familiar formula, two turbid tears streaked down his old face full of wrinkles and spots.

.......
Chapter completed!