At 5 years old, Yong Qi is a stellar student, while the legitimate prince Yong Cong is weak due to his premature birth. Consort Jia gives birth to her second son, Yong Xuan. The Emperor discovers that Wei Yan Wan is being mistreated by Consort Jia, so brings her on as his maid. Though Ru Yi gives Yan Wan the option to be a maid or marry the imperial guard Ling Yun Che, she chooses to not marry and serve the Emperor instead. (Source: frankly at MyDramaList)