There are many reasons for not developing Qingpu, which may include the following points:

1. Differences in geographical location and functions: Qingpu is located on the west side of Shanghai, and its geographical location is relatively remote. Its distance from major urban areas may make it less suitable as a focus for development. In addition, Qingpu's functions and roles may also be different compared to some other emerging urban areas, which may make it less suitable as a core area for urban development.

2. Lack of industrial chain-type supporting facilities: Qingpu District may lack industrial chain-type supporting facilities, which means that it may lack the necessary infrastructure and conditions to support industrial development. If there is a lack of necessary industrial chain supporting facilities, this may increase the cost and difficulty of business operations, thereby reducing the attractiveness and competitiveness of the region.

3. Impact of policy and planning: Policy and planning may be one of the key factors in deciding whether to develop an area. If policies and planning do not pay enough attention and support to the development of Qingpu, then development in the area may be restricted.

It should be noted that the above is only one of the possible reasons, and the specific reasons may vary depending on factors such as time, policy, and actual conditions.