China Southern Airlines' navigation is better, and its ranking in China is better than that of Dual Control. There are many candidates for navigation, but fewer people choose dual control.

I'm from the flight control center, and I'm not sure about other laboratories, but the flight control center has gone six times this year, four navigators, two dual controllers, and one of the two dual controllers. Because of the restrictions of the school policy, most of them have chosen navigators.

I haven't heard that navigation is hard and dual control is soft. . . It's the same in the flight control office. .

Personally, I think navigation is good.

Industrial automation? I'm not sure. Haven't heard much about it. I don't know the details. Ha ha.