Duke Zhou basked in many white shirts.

This shows the recent attitude towards work and study. Washing clothes and painting are a chain process. Washing clothes is to wash away your past troubles, stains, mistakes, etc. And painting is that you are not satisfied with your recent work and want to improve him and satisfy your own ideas through your own strength.

These two plots are connected, if you like. It can be said that the best explanation of past mistakes has been found recently, thus abandoning past prejudices and welcoming new working methods and advanced technologies.

The explanation is a bit one-sided, and it is best to answer it in combination with real life. Dreams are the best reflection of the recent state of life. So, learn to solve it yourself.