C413 Where to Start Is Best?

In Jing Lin's heart, she planned to start investigating Du Xinran. However, she was puzzled in her heart. Things had already happened for so long, so if she wanted to investigate, where should she start from?

When and what would it be best to investigate?

Jing Lin pondered as she turned her gaze to someone nearby and paused for a moment.

Zhou Zheng, this guy doesn't know much