Gezai Opera is a Minnan dialect opera genre that developed from folk singing in southern Fujian province. It incorporates elements from various operatic forms such as Gaojia Opera. It emerged in Taiwan in the early 20th century, later spread to other parts of Fujian province such as Xiamen, then to southern Fujian province and overseas Chinese communities in Southeast Asia.

In its early stages, it featured mainly male-female duets and later evolved into a mature form with Sheng (the main male role), Dan (the female role), and Chou (the male clown) roles, along with stylized movements, music, and spoken lines. Performers sing in natural voice, with the ku dan (the female roles with tragic fates) role being particularly distinctive.

The content is based on folk tales, with representative plays such as The Complete Tales of Lord Ji, emphasizing virtues like loyalty, filial piety, integrity, and righteousness. Performances are generally unscripted and rely on xi xiansheng, people who narrate the story and assign roles.

Its music dominates over spoken lines, with a flexible structure and over a hundred traditional melodies. Accompaniment uses instruments including the yehu (coconut-shell fiddle) and the jinghu (Chinese violin). Later, radio and film versions emerged.

As a cultural form co-created across the Taiwan Strait, Gezai Opera serves as a spiritual bond between people. However, influenced by modern culture, it is now mainly popular among the elderly and requires protective measures.