There may be many reasons why there are no stores in Nanjing. On the one hand, this may be related to the brand's expansion strategy and market layout, and may not have plans to open stores in Nanjing. On the other hand, there may already be local competitors in the Nanjing market, making it challenging for Shuyi Yakisencho to enter the market. In addition, there may be other factors, such as geographic location, level of economic development, and consumer demand, which may also affect the brand's decision to develop in the Nanjing market.

It should be noted that Shuyi Roasted Immortal Grass has opened a large number of stores in other cities and has gained wide recognition in the market. This shows that the brand has certain strength and potential in operation and development. In the future, if Shuyi Roasted Immortal Grass decides to enter the Nanjing market, there may be more factors to be considered and evaluated, including market research, site selection, brand promotion and so on.