Traditional Culture Encyclopedia - Traditional customs - What do you mean by convention? What are the sentences?

What do you mean by convention? What are the sentences?

Description: Wei Ran: The appearance of lush vegetation. Refers to the gradual development of a thing and the formation of a good atmosphere.

Make the following sentences

(1) "Learn from Lei Feng and Lai Ning" has become a common practice on campus.

(2) Respecting teachers and attaching importance to morality has become a common practice in China traditional society.

(3) Let learning from Lei Feng become a common practice in China, and let the spirit of Lei Feng shine forever!

(4) Everyone speaks Mandarin, which has become a common practice in many urban and rural areas of China.

(5) Being polite has become a routine in our school.

(6) The new fashion of civility and politeness has become a common practice around us.

(7) Since the launch of the "Three Stresses" activities, helping others has become a social trend.