1.？ Organization? Meaning? Moderator? ,? Celebrate? Meaning? Celebrate? . Today's four clean-ups generally refer to the company's four clean-ups day. Four clean-ups is the day when the company was founded, which is equivalent to the company's birthday.

4 clean-ups happen every year, just like a person's birthday. However, many companies do not celebrate every year. They usually choose special days to celebrate 10 anniversary, 20th anniversary or 30th anniversary.

Generally speaking, in the company's celebration activities, many companies will hold various parties and invite employees to attend to celebrate the company's birthday. The activities are colorful.