Zhou Jingyun had just learned from Zhou Mingfei that someone from the Xie family was investigating Jiang Tong, which meant that they didn't know Jiang Tong. Even if they did know each other, they definitely weren't close to her. Otherwise, they wouldn't have mobilized so many people to investigate Jiang Tong's identity and background to the point that even Zhou Mingfei had noticed them using their network and connections. Therefore, Jiang Tong saying that she knew Xie Wenkai was simply nonsense!