Who is the blind girl of the informant serving?

The informant, the blind little girl, works for Zheng Tuo.

Zheng Tuo is the eyes of the blind, and the blind is Zheng Tuo's leg. For many years, the two lived alone.

Informer is an anti-mystery drama produced by China International Company, directed by Liu Jin and starring Liu Yunlong and Zhang Jiayi.