Liu Jiankun, it's tough!
The design submission for Warhawk-1 came out of nowhere, catching Aviation Group completely unprepared.
Liu Jiankun had to hastily organize an expert validation panel to conclusively argue the report from top to bottom, because it was a fifth-generation fighter design, and each part required detailed calculations. Some parts even necessitated an attempt at understanding, seeking methods just for the purpose of calculation.
It was like solving a completely foreign problem, requiring the experts in the validation team to exert great mental effort.
For the enormous Aviation Group, organizing a temporary expert validation panel wasn't too challenging; worst comes to worst, they could just recruit staff from the research institutions below.