His infamy spreads overseas!

The next day. Monday.

It just past 6 AM when the doorbell at home rang.

His parents had returned home with Chenchen from Tianjin last night. Everyone was still sleeping except for his mother, who was up early, so she answered the door.

"Who is it?" his mother asked.

Han Henian asked anxiously, "Auntie, hello. You must be Professor Zhang's mother, right?"

His mother looked at Han Henian. "Who are you?"

Han Henian immediately answered, "I am Han Henian from Peking University's Math Department, a colleague of Professor Zhang. I was assigned by the university to come invite Professor Zhang back to the school for a meeting!"

"Oh, you're Teacher Han?" His mother said, "Little Ye is not at home."

Han Henian quickly asked, "Where did he go? Everyone is waiting for him now and Dean Pan is also worried sick. They told me that I have to bring Professor Zhang back no matter what!"

His mother said, "I don't know either. He left last night but did not tell me where he was heading."