Wǒmen shì duō nián de lǎo xiāngshi, wúhuà bù tán.
We are old acquaintances of many years and can talk about anything.
Zài mòshēng de chéngshì lǐ pèngdào lǎo xiāngshi, ràng tā gǎndào géwài wēnnuǎn.
Running into an old acquaintance in an unfamiliar city made him feel especially warm.
