old thorn buds can be picked in Xiqiao Street, Dongsi Street, Longquan Street and Wuhua Park in Wuhua District of Kunming. Picking old thorn buds is one of Yunnan's special cuisines, mainly distributed in Wuhua District of Kunming. In addition, there are also some food stores selling old thorn buds in Kunming market, which can be found in local supermarkets or food stores.