What does it mean to lock a man's birthday in a box?

This is one of the tricks of the Jianghu, but it didn't work at all. What he means is to lock the enemy's character in a box, which means that this person is inconvenient to walk and does nothing smoothly. In fact, he is trying to deceive others and himself. Also, this is the way of the villain. Educated by the virtue culture of the Chinese nation, I won't use this cheap means.