First of all, Princess Guantao knows the times better and has a strong ability to assess the situation. After Liu Qi succeeded in taking the throne, his younger brother Liu Wujiang was far away from Beijing, but Dou Taihou was reluctant. Liu Qi just acceded to the throne, busy with all kinds of state affairs, too busy to take care of Dou Taihou's emotions. At this time, Princess Guantao took the initiative to accompany Dou Taihou and help Dou Taihou relieve the suffering of lovesickness. Dou Taihou is very satisfied with her eldest daughter, and Liu Qi is also very grateful to her sister.
Secondly, Princess Guantao pays great attention to maintaining her relationship with Liu Qi. In the royal family, there is little pure affection, and so is Princess Guantao. In addition to having a very good relationship with her mother, Princess Guantao often sends some beautiful women to Liu Qi from time to time to maintain the relationship between brother and sister. In addition, Princess Guantao has the strength to ease the contradiction between Liu Qi and Liu Wu and solve the menace for Liu Qi.
To sum up, Princess Guantao can enjoy all the splendor because she has calculation and will judge the situation. Compared with Princess Guantao, Princess Pingyang is somewhat bleak. Princess Pingyang followed the example of Princess Guantao and sent a beautiful woman to Liu Che to be with General Wei Qing. However, Liu Che didn't give her any power or privilege, so Princess Pingyang had no real power. Princess Pingyang's mother didn't want to monopolize the harem like Dou Taihou and failed to give her a good backing, so Princess Pingyang was better than Princess Tao Tao.