The Han Empire Rises

Yan was the illegitimate grandson of the Marquis of Gonggao. When the current emperor was King of Jiaodong, Yan studied alongside him, and the two fell in love. After the emperor became crown prince, he grew even closer to Yan. Yan was skilled at riding and archery, and at flattering people. When the emperor ascended the throne, he wanted to wage war against the Xiongnu. Yan had already trained in the ways of the Hu, and so his standing grew ever higher. He rose to the rank of Grand Master, and his rewards rivaled those of Deng Tong. At the time, Yan often shared the emperor's bed and daily life., Records of the Grand Historian, “Biographies of Male Favorites,” Chapter 65

That passage isn’t about him, it’s about his younger brother! As the elder brother of one of history’s most famous favorites, Han Ze feels the pressure!