'Shēng bìng' literally combines 'shēng' (to give birth, to arise) and 'bìng' (illness), conveying the idea of an illness 'arising' or 'coming into being' — hence, 'to get sick' or 'to fall ill'. It describes the onset of physical or mental unwellness, not chronic conditions or injuries. Unlike English 'to be sick', which can mean vomiting, 'shēng bìng' focuses on becoming unwell due to infection, fatigue, stress, or other causes.

This verb is commonly used in everyday spoken and written Chinese to report or discuss health changes. It’s neutral in register — appropriate for casual conversations with friends and formal reports to doctors. It usually appears in simple subject–verb constructions ('Tā shēng bìng le') or with time phrases ('zuótiān shēng bìng'). Note that it doesn’t take an object — you don’t 'shēng bìng something'; instead, you 'shēng bìng' and then specify symptoms separately (e.g., 'tou téng', 'fā shāo').