Ten years ago, Takeda's family was destroyed by Oda Nobunaga, and Chang 'an took refuge in Suruga. There, he met Okubo, Tokugawa's retainer and loyal neighbor. Because loyal neighbors like Nenglie very much, they appreciate Chang 'an very much and keep him around. Later, they married his daughter and recommended Chang 'an to Konka, so Chang 'an changed his surname to Okubo and called him Ten Soldiers.
/kloc-in 0/8, Toyotomi Hideyoshi ordered Tokugawa Ieyasu to be handed over to the eight countries in Kanto. Chang 'an City was promoted by Konka because of its outstanding political ability, and was awarded an acting official position, leading the 18th generation of Kanto officials and ruling the Kanto Musashi Center and other areas around Kanto. Chang 'an's array house is located in heng shan cun, pomelo well, Musashi Tama County.
In the past six years, Evergreen, together with Ina Tadatsugu and others, carried out land inspection in the territory directly under the shogunate, and achieved excellent results.
In the eighth year of Changqing 'an, Chang 'an was appointed as Ishimi Yinshan and Sato Jinshan. They mastered the lifeblood of the shogunate economy and were awarded the official position of Ishimi Shou for their good governance.
In the 11th year of Changqing, he replaced Jacky as the acting official of Izu. Great achievements have been made in mine development under the direct jurisdiction of the shogunate, which laid a financial foundation for the Tokugawa shogunate and acquired the territory of Konka with 30,000 stones. This was a very high territory among the civil servants at that time, and Chang 'an's official career reached its peak here.
In the eighteenth year of Changqing, Chang 'an died at the age of sixty-nine.
However, the fate of Chang 'an did not end with his death. Shortly after his death, the shogunate found out that he had misappropriated huge sums of money, contacted North Korea and illegally spread Catholicism, which was unforgivable. As a result, seven children in Chang 'an were ordered to have their stomachs cut off, and the body of Chang 'an was taken out of the coffin and beheaded, and the territory was confiscated. The loyal neighbors who recommended Chang 'an and anyone related to Chang 'an were implicated and changed by the shogunate, which was the sensational "Okubo Chang 'an Incident" at that time.
As for the evidence of Chang 'an City, there is an accidental record in Book XXII of Taideyuan Palace: "There is a stone room with a big black box under the dormitory of Chang 'an City. Upon inspection, it was found that there were treasures of Chang 'an and letters with North Korea, among which were disrespectful words ... Chang 'an, the son of Saruga Kush, was only suitable to be a tax accountant ... and should not be allowed to master Baoshan (Chang 'an).
In this way, the image of a sinner who was diligent in government affairs in his early years but later degenerated into a greedy and traitor was established. However, there has always been another view that this incident was planned by Bendo Zheng Xin, because he had sworn enemies with Okubo's loyal neighbors, so he wanted to overthrow their loyal neighbors by framing Chang 'an. The whole incident was a conspiracy played by Ben do Zheng Xin.