Only Nanjing has it. Uncle Jiao is only available in Nanjing. According to the inquiry of teaching number in Nanjing, official website, as of May 5, 2023, teaching number has no branch in other cities, so teaching number is only available in Nanjing. Jiaoshu is a bread chain brand, which uses natural grape yeast species, combines the characteristics of European bread and Japanese sweet bread, and adds whole grains for baking.