There is a clear difference in appearance. The heart of rape is the part of the flower bud tissue that grows out of the rape plant when it blooms, its stem is thin and long, the root of the leaf is thin and long, and the leaf blade is tender green and small and irregularly spread out to both sides. While the heart of the vegetable is a specialty of Guangdong, in the overall relatively short, stem and leaf than the more slender, tender green.