Are the porters in the ceramic factory hard?

Because I'm tired from work. The porter has a heavy job, and he will be very tired. He often has backache, and it is a little difficult to bend over. Some people with difficulties persist in making a living, but most people still can't.

The most common porter is still very tired. After all, he is engaged in manual labor, working more than 8 hours a day. He's exhausted and won't last long.