An entire year of research.
Including the preparation and foundation work, it was more than a year's worth.
This was probably the longest amount of time and energy Lu Zhou spent on a single problem.
In order to find a solution to the zero point distribution, he tried almost every single research method. In the end, he chose a proof based on the idea of critical line convergence and used the hyperelliptic curve analysis method to prove the Quasi Riemann's hypothesis.
In order to find the critical band line, he tried almost every method he could think of.
Fortunately, it was all worth it.
It wasn't an exaggeration to claim that this conjecture was worth more than all of his mathematics research combined.
If Riemann's hypothesis was true, then any odd number greater than 7 could be expressed as the sum of three prime numbers. Anyone that knew a little about number theory would know that this was the weaker form of Goldbach's conjecture.