I don't have a high education, so please help me to explain Mr. Mu Xin's sentence, "The lock used to be beautiful, and the key was beautiful and attractive. You will understand when you lock them. "

This is a poem that misses the simple folk customs of the past. The locks in the past were also beautiful and the keys were exquisite, indicating that people in the past would work hard on the locks, instead of just making heavy and solid things to isolate others like today. Working hard on the lock just shows that the lock is only a reminder and does not need violence prevention. The last sentence, if you lock it, people will understand, indicating that the lock was locked by a gentleman in the past. Just to remind you that this is private and you don't want to be invaded. It also shows the simplicity of folk customs and mutual respect between people in the past, and compares it with the lack of trust and some low moral behaviors in today's society.

I hope this helps.