"You can call me Counselor Hou.

"This is my phone number. You should keep it."

Counselor Hou wrote down his contact information on the blackboard. "In the next four years, if you have any problems, you can come to me."

The students took out their mobile phones one after another to keep Counselor Hou's phone number.

If they were in high school, they might have doubted his real intention. When they took out their mobile phones back ...