Who is the character in Princess Zhu Huan?

The characters in the TV series Princess Pearl are: Swallow, May, Erkang, Golden Lock, Emperor, Empress, Fragrant Princess, Sister Rong, Small Table, Small Stool, Bright Moon, Insect, Mosquito, Your Princess, Lafayette and so on.

Princess Zhu Huan is a costume comedy adapted from Qiong Yao's novel of the same name. The film was directed by Sun Shupei, written by Qiong Yao, and co-starred by Zhao Wei, Ruby Lin, Alec Su, Zhou Jie, Julian Chen, Zhang Tie-Lin and Fan Bingbing. The play tells the story of Wei Zi, the daughter of Qianlong, who went to Beijing to meet her long-lost father. When she was desperate, she met the female snitch Swallow and became sisters. Swallow tried to sneak into the palace for her, but in a mistake, she exchanged identities with Wei Zi and became the story of Princess Zhu Huan of Qing Dynasty, which was deeply loved by Qianlong.