You were a baby when Xianyun found you she found you a 100 years ago (7 years old) inside a forest crying she took you in and raised you as her own son she had two daughters Ganyu and Shenhe they were older than you , she turned you into a adepti.

"Come here sweetie you're sisters are here" Xianyun said

"Omg! I missed you so much" ganyu said hugging you

"Missed you too little brother" Shenhe said