A gua bao, also known as a pork belly bun, bao, or bao bun, is a type of lotus leaf bun originating from Fujianese cuisine in China. It is also a popular snack in Taiwan, Singapore, Malaysia, Philippines, and Nagasaki Chinatown in Japan.

Fujian cuisine or Fujianese cuisine, also known as Min cuisine or Hokkien cuisine, is one of the native Chinese cuisines derived from the cooking style of China's Fujian Province, most notably from the provincial capital, Fuzhou. "Fujian cuisine" in this article refers to the cuisines of Min Chinese speaking people within Fujian. Other cuisines in Fujian include Hakka cuisine, and the ethnic minority cuisines of the She and Tanka people. Fujian cuisine is known to be light but flavourful, soft, and tender, with particular emphasis on umami taste, known in Chinese cooking as xianwei, as well as retaining the original flavour of the main ingredients instead of masking them.