In "The Crane and the Magnificent Pavilion," Lu Ying was satisfied with the crown prince. Why didn't she marry her daughter to him?

In "The Crane and the Magnificent Pavilion", Lu Ying was the commander of the Jinyiwei. His family had a high status and prestige in the court. And the Crown Prince Xiao Dingliu was the future Emperor. His status and identity were not as high as Lu Ying's. Therefore, Lu Ying was satisfied that he would not marry his daughter to the Crown Prince Xiao Dingliu because the Crown Prince's status and influence were not as high as his. In addition, the novel also mentioned that the Crown Prince Xiao Dingliu had an emotional entanglement with a woman who was also Lu Ying's daughter. Therefore, Lu Ying was satisfied and worried that the Crown Prince would be with this woman and pose a threat to the family. Therefore, he would not marry his daughter to the Crown Prince, Xiao Dingliu.