said that Hideki Toyotomi actually had a lot of stories with Tokugawa Jiakang. It was said that during Hideki Toyotomi’s period, Tokugawa Jiakang’s whole family was assigned to the plain with the most fertile land. Then some people have to ask why? Isn’t this an opportunity for Tokugawa Jiakang family to grow up? Now we might as well analyze and uncover the secrets of these problems together! “The last battle of Hideki” and “the battle of Hideki’s family in 159kds” is about to end, Xiuji pointed to the fashionable territory of Beitiao at the foot of the mountain and said to Jiakang, “the demise of Beitiao is imminent. I intend to exchange the eight states of Kanto under Beitiao with your current territory.” Jiakang replied, “OK, let’s urinate together and witness the contract.” So they turned and urinated like urchins in the direction of the enemy camp. Then Xiuji asked, “after you entered Kanto, did you arrange Jucheng in xiaotianyuan?” Jiakang replied, “at present, looking at Kanto, it seems that there is no better place to live in the city than here.” Xiuji said, “I heard that there is a place called Edo in Musashi. The terrain is good. How about taking it as a living city?” Jiakang replied, “it sounds good.”

the book “ancient war records of guanbazhou” commented on the matter: “this is really the urine that determines the fate of Guandong!” On the surface, what seems to be behind its happiness is Xiuji’s political conspiracy: previously, Jiakang’s territory was the five states of the East China Sea, but now Xiuji gave it to Jiakang as a gift from the eight states of Kanto. On the surface, the territory has expanded, but this means that Jiakang must give up its ancestral Sanhe and the other four states of Hokkaido. To say the least, even if he took over Kanto, the city of otahara, which has been operated by Beitiao family for many years, is more suitable as a residential city than Edo, which was still unknown at that time. The reason why Xiuji wants to use the eight prefectures of Kanto to exchange Jiakang’s original territory and adhere to the “suggestion” that Jiakang will locate its residence in Edo is actually to hope that Jiakang will spend money and energy on the new territory, so as to weaken the strength of Tokugawa family.

the wily Jiakang naturally saw through Xiuji’s attempt, but he did not rigidly resist Xiuji’s “proposal” – mainly because of the subtle relationship between Xiuji and Jiakang: Xiuji has largely unified the whole of Japan except Beitiao, which is about to be conquered, However, Jiakang is Xiuji’s only strong opponent who has defeated Xiuji on the road of unifying Japan. At this time, Xiuji used political strategy to maneuver and successfully isolate and contain Jiakang, but she was not sure that she had the absolute strength to completely defeat Jiakang; Although Jiakang has defeated Xiuji, if he wants to fight Xiuji, who is about to unify Japan, Jiakang can’t guarantee that he will win. In this situation, in fact, both sides are afraid of each other – maybe Xiuji is just testing Jiakang and doesn’t intend to use it. However, to his surprise, Jiakang officially settled in Edo within only one month.

Jiakang officially settled in Edo on August 1, the 18th year of Tianzheng (AD 1590). Since then, Edo city has continued August 1 as a festival celebration until the fall of Tokugawa Shogunate. Although Edo city is called a city, in fact, almost no one lives here except nearby farmers and fishermen. It is almost a swamp that has not been developed much. In the face of this situation, Jiakang appointed InaI Zhongci as his acting head of Kanto (equivalent to the chief civil affairs officer), and InaI Zhongci was responsible for the comprehensive transformation of Edo. This move was opposed by the old minister bendo Zhengxin – the reason is that many acting officials were appointed in the original operation of the five states in the East China Sea, but only one InaI zhongzi was appointed as the largest of the eight states in Kanto. Does he really have great ability to be competent for such a wide range of affairs? However, Jiakang’s attitude was firm. It was later proved that reusing Yinai Zhongci to transform Kanto is one of the most successful employment cases of Jiakang.

InaI Zhongci was originally the direct son of InaI Zhongjia, the city Lord of Fandou County island in Sanhe state, and later became a close attendant of Tokugawa Jiakang. InaI Zhongci, entrusted by Jiakang with the important task of transforming Kanto, diverted the water flow of Ligen River – he built dams, paved roads, dug canals and bridges on the river embankment, and expanded the arable land area, thus greatly increasing the harvest on Jiakang territory. InaI Zhongci actively encouraged the cultivation of mulberry, hemp and other crops and the construction of water conservancy, making the eight prefectures of Kanto increasingly prosperous. In Ibaraki Prefecture, the specialty of Jiecheng fine weaving (Wicker fine weaving), InaI Zhongci will reward according to the output of twisted silk weaving, which greatly improves the survival enthusiasm of local farmers. He also reformed and improved the financial and tax system in Edo. At the same time, he began to formulate a series of draft laws to meet the needs of Edo’s development and severely suppress illegal acts. He also led the clearance and measurement of Kanto land, setting the tone for the agricultural policy of the Tokugawa shogunate in the future.

because Jiakang moved his ministers and their families to Edo City, there was a significant increase in the population of Edo, which was originally small, and the demand for food and drinking water naturally increased. Therefore, how to divert water into Edo has become an urgent problem to be solved. Therefore, Jiakang sent Okubo, who knows civil engineering, to take charge of the water diversion project. After looking around, Zhongxing determined that the water quality at the well head was the best, so he went along takada Racecourse through dianqiao to Edogawa, Wenjing District, built a dike, and then led the water to all parts of Edo with a wooden sink. This is the project known as “Shentian Sheung Shui”. The water tank has a total length of 64.8 kilometers, and 4000 wells have been drilled in the place where it passes through to store water for drinking water and fire fighting. The project took 21 years and cost 70000 taels. Later, water was diverted from Yucun village in tamakawa, and a 50 kilometer long waterway was excavated in Sigu damuhu in Shinjuku Yuyuan. As the project is in the charge of Yuchuan village youweimen and qingyouweimen brothers, it is called “Yuchuan Sheung Shui”. It is said that the later stage of the project was short of funds, so Yuchuan brothers sold their own property for the project. After




moved to Edo, Jiakang got an unexpected harvest: the excavation of Yinshan on Izu Peninsula is undoubtedly an extremely valuable wealth for the development of Tokugawa regime. Both Yinshan in Izu and Jinshan in Sadu are managed by Okubo Chang’an: