'Yùn jiǎn' literally combines 孕 (yùn), meaning 'pregnancy', and 检 (jiǎn), short for 检查 (jiǎnchá), meaning 'examination' or 'test'. Together, it refers specifically to medical examinations conducted during pregnancy to monitor the health of both the pregnant person and the developing fetus. These tests may include ultrasounds, blood work, urine analysis, and screenings for genetic conditions or gestational diabetes.

Prenatal examinations are a standard part of obstetric care in China and are typically scheduled regularly throughout the three trimesters—often monthly in early pregnancy, then more frequently as delivery approaches. The term is formal but commonly used in hospitals, clinics, and everyday conversation among expectant families. It emphasizes preventive, routine healthcare rather than emergency or diagnostic procedures alone, reflecting the broader Chinese public health emphasis on early detection and maternal-fetal wellness.