2. Everyone is for me and I am for everyone.

3. give someone a rose, and the hand has a lingering fragrance.

The more you give, the more you get.

5. Help one more person and offend one more person.

6. It's convenient for others and yourself.

Extended part:

A few people want to stand up, and a few people want to reach it. -The Analects of Confucius

Give me a peach and a plum.

3. Light a lamp for others, which illuminates others and yourself.

It is a kind of happiness to be concerned by others, and caring for others is also a kind of happiness.

5. Brick walls and tile houses.

6. Flowers need help from leaves, and people also need help.

A straight tree has many uses, but an upright man has many friends.

8. Egoistic people are the first to perish. He lives alone and for himself. If his "I" is damaged, then he can't survive.