Which crosstalk of Yu Qian is the key to open the door?

The key for Yu Qian to open the door is a short cross talk. According to relevant information, the short crosstalk starring Degang Guo and Yu Qian came back, and Yu Qian took out the key to open the door. The clip comes from a clip: Recently, there was an episode at Mr. Yu Qian's house, where only a security door stood. The teacher came home, took out the key and opened the door. It really collapsed. Crosstalk, a folk rap art, highlights its characteristics in the form of speaking, learning, teasing and singing.