在内 (zài nèi): (included) in it (Noun) — Meaning & Stroke Order

This product is very popular in the mainland.

He has never violated the rules, so it is absolutely impossible for him to appear on the internal blacklist.

Rumors about the company's restructuring circulated internally, causing unnecessary concern.

Given that this matter may involve personal secrets, it is advised to discuss it cautiously in the internal meeting.