Nian

Race: Undisclosed
Height: 165cm
Birthday: September 9
Place of birth: Yan

Nian, a mysterious visitor from the faraway land of Yan, is willing to provide a little bit of assistance, However, she turns out to be one of the fragments of the ancient Yanese Feranmut Sui, ranking ninth among them, alongside with her siblings.

(Source: Arknights Wiki)