Although the Yuan family had already arranged for people to do an investigation about it, they did the same thing. If they could find out before the Yuan family, it would become their credit.
Because Du Zhenghan was also in Wei Lingfeng's office along with Yunyao and the others today, the Rong family and the Chang family believed that it must be the Yuan family who released the news that Yunyao had returned.
They weren't dumb, so they easily figured out the purpose. The Yuan family simply wanted to use them against the Leng family, but they weren't idiots.
Although they didn't want Yunyao to be alive, they were clearly aware of her abilities. No matter how they disliked her, they wouldn't attack her without thorough preparation.
Besides, it wasn't them who were determined to replace the Leng family, so there was no need for them to stand out at this moment.