HSK 4
Wǒmen shì duōnián de lǎoxiāngshi, wúhuà-bùtán.
We are old acquaintances of many years and can talk about anything.
HSK 7-9
Zài mòshēng de chéngshì lǐ pèngdào lǎoxiāngshi, ràng tā gǎndào géwài wēnnuǎn.
Running into an old acquaintance in an unfamiliar city made him feel especially warm.
