Hard work, you have to serve for weeks in any career. If you want to do well, you will work hard. If you want to get along, you won't do it for long.

When you are young, it is not bitter, but when you are old, it is true.

Therefore, people who can do it have suffered a lot, but they have high expectations and requirements for themselves, so they are open-minded and do not feel bitter. They think this is an experience. Arrive with courtesy and efficiency.