Genji's eldest son, a descendant of Genji Qinghe, and the mother of Masako of Kitajima, has a long life.

In the first year of Shouyong (1 182), he was born in the home of an enterprise employee in Kamakura County. At this time, Yuan Laichao was 36 years old and urgently needed a male heir. Lai was born in a blessed family. Six years later (1 199), Genji died suddenly, and Minamoto No Yoriie became the head of Genji's family. In the second year (1202), Ren Jian rose from the second place to the second place, and then rose to the second place the following year. The young Lai family is used to acting arbitrarily, ignoring family ministers, reusing his father-in-law as a member of the enterprise, and alienating his matriarchal ancestor, Beitiao. Because it harmed the interests of the Kitajima family, the thirteen-member collegiate system introduced by the family ministers suppressed Lai's dictatorship.

Lai hoped that Di Zi Yifan would be the next general, while Kosuke Kitajima supported his younger brother Qian Fan to succeed him. In three years (1203), Lai's family was seriously ill and dying, and the contradiction between Biqi's family and Beitiao's family broke out. Biqi's plan to organize a crusade against the Beitiao family failed, and the conspiring Biqi family was destroyed (the change of Biqi talents) and Yifan was also killed. After Lai's family recovered, they heard about the tragic situation of his wife and children and were furious. However, when Kitajima was in power at that time, Lai's family was deprived of the post of general and exiled to Izu Xiu Temple (Izu City, Shizuoka Prefecture) for confinement. In the second year, he was assassinated by an assassin sent by the North Island family, whose legal name was Wu Jinda Chanhe, the master of Fahua Academy. Minamoto No Yoriie's eldest son, Yizan, was killed by the Kitajima family in the change of gifted scholars, his third son died in riots, his fourth son, Chan Xiao, was killed by Kitajima's assassin, and his second son, Gong Xiaoxian, became a monk in seclusion. In 12 19, he was convicted and executed for assassinating his uncle Shi Chao at the age of 20. At the age of 32, her daughter Zhu Yuzhu was dystocia and her mother and son died. Because of the same mother and brother, minamoto no sanetomo had no children, and the blood of the Yuan Dynasty was completely cut off after the death of Zhuyu Institute.

Masako Kitajima (ほぅじょぅまさこ, the second year of Baoyuan (1 1 57)-July of the first year of Karo (65438)/kloc-. She and Zhao Yuanlai have two sons and two daughters, namely Minamoto No Yoriie, Yuanben Wusan, Daji and Sanchazhi. The brothers are Master Kitajima, Yi Shi Kitajima and Shifang Kitajima, the younger sisters are Aboju, Gaozi, Zi Rong and Zi Yuan, and Masako is the eldest daughter of Kitajima's current politics.