What does the young man mean by moving bricks?

When we chat online, we often see people saying that they are going to move bricks. So, what does the young man mean by moving bricks? In fact, in the network language, it means that you are going to work. Moving bricks is another name for going to work. However, compared with going to work, moving bricks has a bleak feeling, like really moving bricks on the construction site. The work is very hard and the salary is very small. It means that a person is poor and needs to do some tiring work to make a living, instead of moving bricks at the construction site casually. Young people often say this in a derogatory way to laugh at themselves or others. The word "moving bricks" on the Internet originated from Baidu Post Bar, which can be extended to: the foreman told you to move bricks.