The castle of Yedo was reconstructed and enlarged after the battle of Sekigahara, while Ieyasu continued to reside at Fushimi. The Jesuit fathers, who accompanied the Father Provincial on his visit to Ieyasu, assert that 300,000 men were employed in this work. Very much of the ground where the present city of Tōkyō now stands, was then, according to old maps, covered with water. In excavating the moat which surrounds the castle, and the canals connecting this moat with the Sumida-gawa, immense quantities of earth were obtained, which were used to fill up lagoons and to reclaim from the shallow bay portions which have now become solid land. This work of building the castle and fitting the city for the residence of a great population, was carried on by many of the successors of Ieyasu. The third shōgun, Iemitsu, the grandson of Ieyasu, made great improvements both to the castle and the city, so that the population and position of Yedo in no long time placed it as the chief city of the empire.(229) The task to which Ieyasu devoted himself during the years of his residence at Yedo was that of consolidating and settling the feudal system of the empire. The daimyōs had for centuries been so accustomed to conduct themselves independently, and to govern each his own province in his own way, that they might be expected to resent any efforts to restrict their action. Fortunately Ieyasu was a mild and temperate man, who, while he could act with firmness, was most considerate of the feelings and motives of others. After the decisive victory of Sekigahara he readily and cordially made terms with his enemies, and did not show himself rapacious in exacting from them undue penalties for their hostility. To the daimyō of Satsuma, as we have already seen, he restored the entire territory which Taikō Sama had given him. The daimyō of Chōshū was allowed to keep two of the provinces out of the ten which he had acquired by conquest, yet these two made him still one of the richest and most powerful princes in the empire. With others he dealt in the same liberal spirit, so that out of the old proud daimyōs whom he spared and permitted to continue in their holdings, he created for himself a body of fast friends.