The most direct and simple way to distinguish between fanxinghua and xiandanhua is to count the petals.
The star flower has 5 petals, so it is also called five star flower, while the peony flower (Dragon Boat flower) has only 4 petals.
The flowering period of xiandanhua is longer than that of fanxinghua. It can bloom from March to December, while that of fanxinghua is mainly from March to October. Therefore, in winter, we can only see the figure of the xiandanhua