Sha Gao had a lot of control over his wife, Ye Wen. Ye Wen said that Sha Gao would check her phone whenever he was at home to see who had contacted Ye Wen recently. He said that he was jealous and afraid that someone would try to pursue Ye Wen.
In fact, Ye Wen knew that he was just afraid that she would return to the workplace and take back her company.
He knew how capable Ye Wen was. Moreover, Ye Wen had a lot of connections. If she really put her mind to it, Sha Gao might not be able to defeat her. Even though Sha Gao had already taken over the company and controlled it for many years, he was still wary of his wife.
Ye Wen was under Sha Gao's surveillance. She told Yin Xun about her situation, then roughly told Yin Xun her thoughts before leaving.
She wanted to take the company back from Sha Gao in name first, then transfer the couple's joint assets before getting a divorce. That way, Sha Gao would get nothing.