It means that he gives me peaches and I give him plums in return. The moral is gratitude; It is also a metaphor for giving and answering each other.
2. The alloy of the two is unfavorable, and the sky covers the city and the country. -Ming Dynasty: Li Dongyang's Sui and Yang Tan.
Two people are strong enough to cut even metal. I fought for my country with you in the city.
3, make friends with each other, why should flesh and blood kiss. -from "Han Song".
Translation:? To make friends, keep in mind and know yourself. This is a true friend, an amiable and trustworthy friend.
4. Ten thousand people hold bows and shoot one move, and all moves are successful. -Qin's favorite pupil, Lu's Spring and Autumn Annals.
Everyone is holding a bow and arrow and shooting at a target. Nothing is missed.
5, with the strength of all, invincible. -Western Han Dynasty: Huai Nan Zi by Liu An and his disciples.
With the strength of all people, nothing can't be defeated.
6. Wan Li is still close to its neighbors. -from the Han Dynasty Cao Zhi's "Giving a White Horse to Wang Biao"
A gentleman aspires to the four seas. Although he is separated from Wan Li, he seems to be beside him.