A lot of people had been visiting Lu Zhou recently.
First was the director of the State Administration for National Defense, then was a high-ranked official from the Energy Bureau. After that, Luo Wenxuan and Chen Yang asked him to help with the "quantum mechanical system of the random Hermitian matrix corresponding to the Riemann function" and the "Hodge conjecture". Lu Zhou just wanted to focus on his own research project, but he couldn't just refuse to help others either.
He was supposed to be working on the significance of the Riemann zeta function with Luo Wenxuan together, so he had to contribute, at least a little.
As for Chen Yang's research project, Chen Yang needed help with the hyperelliptic curve analysis method. Also, Lu Zhou was the one that said to ask him for help, thus making it even harder for him to refuse to help Chen Yang…