Why can't China soldiers talk when they see their mothers on guard?

China People's Liberation Army Internal Affairs Ordinance

The first reason is that China soldiers are on duty outside. They are not only responsible for maintaining order at the scene, but also represent the image of China soldiers. If you have to say hello to your relatives, it will not only lead to negligence, but also damage the image of China soldiers.

The second reason is that although there seems to be only one soldier standing guard outside China, there will be pickets around to check at any time. If you find yourself absent without leave, it may be a verbal warning or a demerit, and it may also affect the evaluation at the end of the year.