What episode is Tiko's transformation?

27 episodes Tiko Spring Because of the magic of the Dragon Map, Xia and Ti can be imprisoned in the ancient continent, and in order to escape from danger, Ti can transform.

Tike comes from a story, which mainly tells the story that Tike, a young artist from Kunlun Star, came to the earth alone with a dragon map, hoping to surrender the guardian spirit of the 24 solar terms and save the crisis in his hometown. Mistakenly put the dragon map into the hands of the little boy in the summer, and admitted that he was the master. In the process of surrendering to the guardian spirit, various characters, enemies or friends, appeared one after another.