往来 + Noun / Place + 往来 + Person
往来 (wǎnglái) means "coming and going," "to and fro," or "contact" and describes movement in both directions or interactions between people. It combines 往 (to go) with 来 (to come). In classical poetry, it can describe the bustle of people traveling back and forth, while in modern Chinese it also means social interactions or dealings.
这条街上人来人往,非常热闹。
Zhè tiáo jiē shàng rén lái rén wǎng, fēicháng rènao.
This street is bustling with people coming and going.
两家公司之间的商业往来越来越频繁。
Liǎng jiā gōngsī zhījiān de shāngyè wǎnglái yuè lái yuè pínfán.
Business dealings between the two companies are becoming more and more frequent.
我跟他已经没什么往来了,好几年没联系了。
Wǒ gēn tā yǐjīng méi shénme wǎnglái le, hǎo jǐ nián méi liánxì le.
I don't really have any contact with him anymore — we haven't been in touch for years.