After entering the palace, Yang Yuhuan followed the feudal imperial court system, but did not ask about state affairs or intervene in power struggles. With his charming and docile musical talent, he was favored by Xuanzong in all aspects. If Yang Yuhuan had been born in other times, he might not have become Yang Guifei.
In the Tang Dynasty, people regarded fullness as beauty, while Yang Yuhuan "condensed fat and colored". Even the "fat" began to "coagulate", giving off a gorgeous color like "rouge".
Extended data:
Yang Guifei, the favorite concubine of Emperor Xuanzong of the Tang Dynasty, has the beauty of the whole country, is born with beauty, is proficient in temperament, can sing and dance, and is good at playing pipa. So Tang Xuanzong loved her very much. In order to please Yang Guifei, every litchi season, the emperor of the Tang Dynasty, who was over 10,000 people, always assigned a special person to transport fresh litchi with dew from Sichuan (some people say Guangdong and Fujian) through Wuli or Shili post stations.
The enjoyment in the palace is extremely luxurious. The more rare and delicious it is, the more rare it is, and the more tribute it needs. In addition to litchi, there is also a kind of wine named court royal wine by Emperor Xuanzong of Tang Dynasty. The water used for brewing is the morning dew on the mountain. This wine has the unique geographical advantage of developing agriculture in Sichuan, and the brewed wine is mellow, clear but not light, strong but not bright!
Baidu Encyclopedia-Yang Guifei