Caiyantang Chaosu Noodle Shop - Nanxi Main Store is a noodle shop in the alley off Nanjing West Road in Taipei's Zhongshan District, behind Nanxi Sanyi. It serves wontons, noodles, and chicken soup, along with chaosu and zhajiangmian. The chicken soup contains two small chicken legs. Order on your phone by scanning the QR code on the table, then pay at the machine at the front; Line Pay is also accepted, and ghost peppers are very spicy, so avoid them if you cannot eat spicy food.