How did Sunward seed evolve into the Flash Sang Fulan?

Sunward seeds evolved into shining Sangfulan by using the stone of the sun. In the Pokemon game, after using the sun stone, Sunward seeds will evolve into flashing Sangfulan. After evolution, the speed of chlorophyll in sunny days will increase, the strength of the sun in sunny days will increase, and the HP in each round will decrease. Therefore, the seeds of the sun have evolved into shining sangfulan by using the stone of the sun.