At the sound of Feng Tianlan's voice, Qi Hongan raised his head. His face was dirty. Due to the absence of spiritual force, he aged ten years within a short period of time. He looked at her. "You are Feng Tianlan. You are not from the Shang Family. How did you know what happened to the Shang Family? Who told you that?"
After that incident, he figured out that Feng Tianlan was really from the Feng Family of South Peace City. It was impossible for her to be the remaining evil spawn of the Shang Family, the same goes for Luo Yunzhu.
However, when his evil deeds had been exposed, he didn't think deeply and thought they much be from the Shang Family since they knew about the Galaxy Whip. Thinking about it now, he had been making assumptions back then.