Yelan is a detective from Ministry of Civil Affairs at Liyue. She uses glowing blue string that came from her Hydro Vision as her power to tie a person or else. She's a mysterious, calm, and quiet woman. 

Yelan was a tall woman, she has pale skin, light emerald-green eyes, and dark blue hair and asymmetrical bangs that are lighter at the tips.

Yelan's attire consists of a overcoat and a dark bodysuit. She keeps a furred white coat hanging from the back of her outfit