C30 I'd like to stay

Yue Zhishan put out the half of the cigarette in her hand and turned around, preparing to leave. I clenched my fists and asked urgently, "Did you say that big sister owed you a debt of gratitude? You also worked in the Nine Houses, so you should know who your elder sister was in contact with. "Help me. Tell me how to find the person who killed my sister."

She walked to my side