First of all, why doesn't Princess Li like Fan Xian?
With the development of the plot, the intelligence of the prince was revealed, and Fan Xian's cognition of the prince was re-established. At the same time, his dislike for the second prince is deepening. However, he still didn't think that the second prince who really stood with princess royal was also the second prince who tried to commit suicide.
For this problem, we can consider it from the following aspects: On the one hand, Fan Xian's mother Ye has been in charge of the internal reference library before, and Li gained the control of the internal reference library, which must have been obtained by attacking Fan Xian's mother. Because of the previous holidays, Li didn't like Fan Xian, and he didn't want his power to return to the son of his political opponent.
On the other hand, Li has huge financial treasury power and inflated political ambitions, and is unwilling to lose his power. At the same time, Fan Xian's father Fan Jian is only an assistant minister of the Ministry of Finance, and Fan Xian is nominally his illegitimate child, so Li does not want his daughter to marry Fan Xian.
Secondly, Fan Xian's series of performances in Beijing made Li feel uneasy.
Princess Li is not optimistic or even satisfied with Fan Xian, so naturally she doesn't want to marry her daughter to Fan Xian. At the same time, since Fan Xian went to Beijing, he has been closely related to the Second Prince and participated in and cracked down on Guo and other princes' parties, which made Li, as a prince's party, feel uneasy. This is also an important reason why Li doesn't want to marry Fan Xian.
Finally, we not only saw Li walking around the harem, encouraging the queen mother to oppose Fan Xianhe's marriage, but also saw him and the prince and others. Get rid of Fan Xian with plans and strategies. It can be seen that Lin Ruofu, the powerful minister, has always been able to accept Fan Xian, while Li has always been unwilling to accept Fan Xian as his son-in-law.