插手 (chā shǒu): Get involved in / Meddle in (Verb) — Meaning & Stroke Order

This is a matter between the husband and wife; outsiders had better not get involved.

Regarding international disputes, we consistently advocate for not interfering in other countries' internal affairs.

Why do you want to meddle in the private conflicts between that couple?

He always likes to meddle in other people's work, which is annoying.

The board of directors explicitly warned the management not to interfere in specific R&D projects.

It was only after the neighbors got involved one after another that the intense community dispute was finally resolved.

It's best for outsiders not to get involved in the company's internal affairs.

This matter is too complicated; I suggest you don't rush to get involved just yet.