How did the little white elephant in the mini world own it? How to upgrade?

If you want to upgrade to the second stage of "Happy White Elephant", you need 300 small white elephants, and upgrade to the third stage of "Classic White Elephant", you need 600 small white elephants. When a certain number of small white elephant pieces are collected, we can go to the mount page to upgrade our small white elephant. Is it simple? Come on, friends ~