1. The input is not directly proportional to the income, which leads to the shareholder's withdrawal.
2. In the process of aircraft R&D, the company lacks too much technology in key systems and needs to rely on technical guidance from other countries, which leads to many problems in the R&D process and repeated delays in project planning.
3. After the first flight of the plane, many serious problems were exposed, which made the project unable to continue.
In short, due to lack of technology and investment problems, Hongge's airport project finally failed.