Traditional: 必須
必须 (bì xū) means “to have to; must; compulsory; necessarily”. It is an HSK 3 Chinese word (traditional 必須) in the HSK 3.0 vocabulary.
Practice each character:
你必须完成作业。
Nǐ bìxū wánchéng zuòyè.
You must finish your homework.
Updated: 2026-05-27