The helicopter workshop is always the top priority. Liu Hai holds the responsibility card made in the workshop yesterday.
Carefully check all the things done in the helicopter workshop yesterday.
Others were waiting nearby. After the bangs were checked, they signed: "Well done. It doesn't matter if you do it slowly. Don't make mistakes. You must follow the process."
Helicopters are such sophisticated and expensive things that we really need to pay attention to every point, even a rivet and a screw.
If you think that one rivet and one screw is not a big problem at the beginning, it has no impact on the whole.
So