C1437 The name-tearing contest has reached its climax

"This …"

Xu Zengshou was a little doubtful. He didn't understand why Shi En would tell him such a method.

Thus, he knocked on the door that was beside him, seemingly sending some signal to the other party.

When Shi En heard the signal, he also gave a response signal by knocking on the door.

Then, he said loudly, "I'm not losing anything