欢庆 (huān qìng) is a compound verb meaning 'to celebrate joyfully' or 'to rejoice in celebration.' It combines 欢 (huān), meaning 'joy,' 'delight,' or 'happy,' and 庆 (qìng), meaning 'to celebrate' or 'to congratulate.' Together, they emphasize both the emotional state (joy) and the action (celebration), making it stronger and more festive than either character alone. The word carries a formal, uplifting tone and is often used in written Chinese, official announcements, news reports, and public speeches.

欢庆 typically appears in contexts involving national holidays (e.g., National Day), major achievements (e.g., Olympic wins), weddings, or community milestones. It is rarely used for small, private occasions — for those, words like 庆祝 (qìng zhù) or 过节 (guò jié) are more common. As a verb, it can be preceded by subjects (e.g., 人们, 全国人民) and followed by objects (e.g., 新年, 胜利) or used intransitively with adverbs like 热烈地 (rè liè de, 'enthusiastically').