I guess what you mean is to apply for an invention first, and then come back to apply for a utility model after failing the examination. Obviously, it is impossible to tell you. Because when you know that the invention patent can't be authorized, it has been made public, and generally it has exceeded the priority period of one year. When you apply for a utility model patent again, the invention patent constitutes the existing technology of utility model, and it is meaningless to apply for utility model. Even if it is authorized (the utility model has not been substantially examined), the right is unstable unless you just want this certificate. If it is known that the invention cannot be authorized, it has not been more than one year since the date of application, so as to avoid the situation that the former invention patent affects the latter patent.
As someone upstairs replied, if you haven't applied for an invention patent yet, you can consider applying at the same time, which is safer. If the invention is not authorized, the utility model can generally be authorized, and if the invention is authorized, it will be abandoned.
As you know very well, passing the PCT is generally unacceptable. First of all, PCT should be applied within 12 months from the date of application. Secondly, in China, it has nothing to do with PCT.