5 yuan. According to the noodle information of Master Kong's flagship store, we can know that it is five yuan a box, and the price on the shelves of shopping malls is the same as that of the flagship store. So the Regan Noodles of Master Kong is 5 yuan a box. Master Kong generally refers to Master Kong. Master Kong (referred to as Master Kong or Master Kong Company) is mainly engaged in the production and sales of instant noodles, drinks, cakes and related supporting industries in China.