The Crown Prince of the Crown Princess Promotion Novel knew she was male at the end. The plot at that time was:
Time traveled back to the modern era, Zhang Peng with a respirator woke up in the hospital, he unplugged the medical equipment on his body and emotionally searched for Qi Sheng. When he went barefoot to find a doctor to inquire, he found that the doctor was none other than Qi Sheng. The two of them looked at each other, and Qi Sheng looked at Zhang Peng's mind recalling Zhang Pengpeng's voice and smile.
Expanded Information:
"The Prince Consort's Rise to the Top" is a costume crossover web series produced by Beijing LeYang Film and Media Co. Zhang Tianai, Sheng Yilun, Yu Misty and Guo Junchen starred in the movie.
The drama is adapted from Fresh Orange's novel of the same name, which tells the story of a male-blooded and female-bodied Crown Princess who breaks into the palace and rises to a higher position along the way.
Playboy Zhang Peng accidentally falls into the water to avoid his ex-girlfriends. When he wakes up, he realizes that he has not only traveled through a thousand years, but has also changed his sex to become the Crown Princess of the current dynasty - Zhang Pengpeng. Zhang Peng, who has hunted countless women, can't accept this fact, but there's nothing he can do to change it.
Pengpeng Zhang, on the one hand, salivates over the 3,000 beauties in the Crown Prince's harem, but on the other hand, she is not allowed to learn how to handle herself in the harem. The biggest headache for her is that as the "Crown Princess", she has to curry favor with the Crown Prince Qi Sheng.
Thus, in order to protect herself, Zhang Pengpeng, who is a girl and a boy, has to be caught up in the struggle between the Crown Prince, the Ninth King and the King of Zhao. After all the struggles and love-hate entanglements, Pengpeng Zhang eventually fell completely in love with Qi Sheng, and the two of them gave up everything and returned to the mountains.
Baidu Encyclopedia - The Prince Consort's Rise to the Top