We were all unhappy until the end of the day, when we met. We understand. What is the relationship between acquaintances? . -(Tang) Bai Juyi
Mochow has a vast road ahead, and everyone knows you. -(Tang) Gao Shi
There are no happy friends and no happy friends in the world. -(Qing) Pu Songling
Know each other, know each other, know each other, know each other. -(Spring and Autumn Period) Mencius
A friendship between gentlemen is as light as water, but a friendship between villains is as bitter as cucumber.