péng yǒu bāng nǐ jiè shào gōng zuò fáng zi huò xīn péng yǒu shí hòu xù lián xì zuì hǎo ràng jiè shào rén zhī dào yī shēng

朋友帮你介绍工作、房子或新朋友时，后续联系最好让介绍人知道一声。

When a friend helps you find a job, apartment, or new friends, it's best to let the introducer know about subsequent contact.