Old Zhang from the company is retiring next year, counting down every day.

Today, he suddenly received a notice: the delayed retirement policy has been implemented, and he has to work for three more years.
Old Zhang went to find the leader, who said, "This is a national policy, I have no way to change it."
Old Zhang asked, "Then what am I supposed to do these three years?"
The leader said, "Your original position has already hired a new person, you can go downstairs and watch the gate."
Old Zhang said, "Watching the gate is also fine."