There may be the following reasons for the disappearance of Hangzhou Jiubai Bowl:

1. Rising operating costs: With the rising operating costs of labor and ingredients, the pressure on restaurants is gradually increasing. In this case, 911 bowls may be difficult to make a living.

2. High rent: In big cities with increasingly prosperous business activities, rent is also an important factor affecting the operation of restaurants. If the rent is too high, the restaurant may face greater economic pressure.

3. Fierce competition: Under the background of increasingly fierce competition in the catering industry, Jiubai Bowl may be difficult to attract enough customers because of brand, taste, price and other issues.

4. Changes in business model: With the development of mobile Internet technology, many consumers' shopping habits and payment methods are changing. If Jiubai Bowl fails to adjust its business model in time, it may face the risk of being eliminated by the market.

5. Other reasons: In addition to the above reasons, there may be some other factors leading to the disappearance of Jiubai Bowl, such as changes in policy environment and poor management.

In a word, there may be many reasons for the disappearance of Hangzhou Jiubai Bowl, which need to be analyzed in combination with the actual situation.