The eagle went down the mountain and the tiger soared into the sky. Who controls the ups and downs, only me and Dolly? What does this mean?

Wang Fan has the speed of eagle diving and the momentum of tiger soaring, which can even dominate the prosperity between heaven and earth. When the eagle goes down the mountain, the tiger soars into the sky, which means that the eagle swoops down when hunting and the tiger soars into the sky when hunting. Describe the speed is very fierce. Dorri means that the ups and downs of this vast land are decided by dorri. This sentence is very exaggerated, which shows that dorri is very powerful and can affect the prosperity between heaven and earth.