If you find that the fan in the water tank is turning just after the flameout, it is suggested that you don't panic at this time, you can wait for a while. Because the water temperature in the water tank drops slowly, the water temperature has not dropped at the beginning of flameout. At this point, the cooling fan will still work for some time before it stops.
However, if the car is completely cooled and the fan still does not stop or keep rotating, it may be that the assembly of the cooling fan or the circuit of the cooling fan is faulty. It is recommended to go to the store and ask the master to check the fault.