Why did the Taliban never attack China?

The Taliban don't have this condition. If he wants to attack China, there are only two ways. The first is to sneak into China secretly, but geographically, the border between China and Afghanistan belongs to mountainous areas. After entering China, a large area belongs to no man's land, and the border guards patrol frequently and the roads are not smooth, so he will naturally give up. The second is to hijack the plane. But since 9 1 1, countries all over the world have stepped up their preparedness.