What is the distribution of urban roads in Tokyo?

The urban road layout of Tokyo is a road network system with Miyagi as the center and combining radial and square formats. The main road is facing the city gate, forming a grid road network, and the secondary roads are also grid-shaped. The main road is called Imperial Road, and there are four roads: one is from Xuande Gate in Miyagi, and the other is from Zhuquemen to Nanxun Gate; Second, from the state bridge to the west, through the old main entrance to the new main entrance; Third, from the state bridge to the east, through the old Songmen to the new Songmen; Fourth, from Tochigi, Miyagi, to the north, through the old Fengqiu Gate to the new Fengqiu Gate. "The gate is the third floor of the barbican, so bend down to open the door. Only Nanxun Gate, Xinzheng Gate, Songxinmen Gate and Fengqiu Gate are straight doors; Cover the original four main doors and go out of the Imperial Road. " "From Xuande Gate to the south, Fangxiang Yujie is about 200 steps wide. On both sides is the Royal Corridor. During the transaction of the elderly, there was a lawsuit between politics and the court. All roads are equipped with black paint forks, and the center of the road is two lines of Anzhu paint forks. No one can walk. Pedestrians are holding red paint forks outside the entrance. There are two channels in the fork: masonry and porcelain ditch water. Xuanhe planted lotus flowers, and planted peaches, plums, pears and apricots near the shore. It looks like embroidery between spring and summer. " This enables us to imagine the beauty of street greening landscape at that time.