'Wàn suì' literally means 'ten thousand years'—a traditional Chinese expression of enduring longevity and supreme auspiciousness. Historically, it was reserved exclusively for emperors, symbolizing their eternal reign and divine mandate. The character 万 (wàn) means 'ten thousand', representing infinity or immeasurable scale in classical usage, while 岁 (suì) means 'year', reinforcing the temporal dimension of lasting life.

Today, 'wàn suì' functions primarily as an enthusiastic interjection meaning 'Long live!'—used in patriotic rallies, celebrations of national achievements, or spontaneous cheers at sporting events. It conveys strong collective emotion, admiration, or triumph, but remains formal and ceremonial rather than casual. Unlike everyday greetings, it carries weight and solemnity, often shouted in unison. Its tone is celebratory yet reverent, echoing historical grandeur while adapting to modern communal expression.