Where are the seeds for the Obi Island Seed Mission?

After finding the first 22 seeds and watering them, you can click on the fairy of Baihua Garden, which will let you answer a few questions. After you get the correct answer, it will give you an evolutionary ball. You can go to the underground cave of Elf Island and click on the cordate telosma, and you will enter its belly. You can just hit the five dark clouds in his stomach with a purification ball. After the child turns into night, the flowers around him will return to the Baihua Garden, and so will you.