必修 (bì xiū) means “(of an academic course) required; compulsory”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
数学是大学的必修课。
Shùxué shì dàxué de bìxiūkè.
Mathematics is a required course in university.
Updated: 2026-07-18