A joke that satirizes various occupations in architecture.

There is a young couple, both of whom are engaged in civil engineering, and so are their children.

One day, a child asked his mother: What do owners, design institutes, construction units, safety supervision stations and supervisors do?

His mother replied, the master, like your father, does nothing but train people with his hands behind his back all day.

The design institute is like your grandfather. He is conservative and backward in thought. He walked around with a birdcage, pointing, but taking care of nothing.

The construction unit is just like your mother. She works all day, busy inside and outside, and sometimes she is scolded by your father and grandfather.

The safety supervision station is like your grandmother. She doesn't like anything. She nagged all day, but no one listened to her.

The child asked again: What is another supervision unit?

His mother said: the invigilator is just like you, saying that he is supervising parents, but in fact he is eating parents' meals, wearing parents' clothes and spending parents' money. They can only pretend to supervise their parents, but sometimes they play a little temper and mom has to coax you.