Choy sum Choy sum Choy sum (also spelled choi sum or "Cai Xin" in modern Pinyin) is a leafy vegetable commonly used in Chinese cuisine. It is a member of the genus "Brassica" of the mustard family, Brassicaceae ("Brassica rapa" var. "parachinensis" or "Brassica chinensis" var. "parachinensis"). Choy sum is a transliteration of the Cantonese name (), which can be literally translated as "heart of the vegetable". It is also known as Chinese Flowering Cabbage. Choy sum is a green leafy vegetable similar to gai lan, and can be characterized by the distinct yellow flowers which it bears. Each flower has four
Choy Li Fut district and called it Siu Buk Hung Sing Choy Li Fut. Eventually it was shortened to Buk Sing Choy Li Fut. Tam Sam's students referred to themselves as the Buk Sing branch of Choy Li Fut. A Northern Shaolin master named Ku Yu Jeung (aka Gu Ruzhang) befriended and joined Tam Sam and thus added more techniques to the Buk Sing Choy Li Fut curriculum. What makes Buk Sing Choy Li Fut a unique branch is that it concentrates on the application of Choy Li Fut techniques rather than the practice of forms. Because the emphasis is on combat applications,