If it is closed, it means it is closed.

This is the name of a move in Tai Chi, and its meaning is as follows

It is like a diagonal cross seal. Keep the enemy from entering. Just like a house is closed after being stolen. This means like sealing. At the same time, sit on your hips with your chest in your arms. Then separated. Change to pressing the palms of both hands towards the enemy's elbows and wrists. Don't let it go. They cannot be separated. This is called closedness. It seems that the door is closed and cannot be opened.