C789 Absence of a police clerk

After a while, the little Daoist slipped out again, "I'll tell you my method, you just need to listen. You don't need to speak, if you don't understand, you just shake your head and nod once. Do you understand? "

After Zhang Zitao heard this, he nodded his head in understanding.

The policeman sitting beside Zhang Zitao saw that Zhang Zitao had nodded his head for no reason