We can conclude that the floor plan of the Northern Song Dynasty's Tokyo City exists, but the specific floor plan is not found in the search results provided. In the Northern Song Dynasty, Dongjing City was located in today's Kaifeng City. It was made up of three parts: the imperial city, the inner city, and the outer city. The layout of Tokyo City used open streets instead of closed alleys, which was an innovation at that time. There were four rivers in the city, namely the Bian River, the Golden Water River, the Wuzhang River, and the Cai River, forming a water network. Apart from that, Tokyo also had city gates, barbicans, watchtowers, horse faces, and other buildings, as well as defensive facilities such as moats. Although we didn't find a specific floor plan, this information can help us have a preliminary understanding of the layout of Dongjing City in the Northern Song Dynasty.
During the Song Dynasty, Tokyo City belonged to Kaifeng City in Henan Province.
Tokyo in the Northern Song Dynasty was today's Kaifeng in Henan.
Tokyo in the Song Dynasty was located in today's Kaifeng City in Henan Province.
During the Northern Song Dynasty, Tokyo was now Kaifeng City in Henan Province.
In the Northern Song Dynasty, Dongjing referred to Kaifeng in Henan.
Tokyo in the Northern Song Dynasty was today's Kaifeng in Henan.
In the Northern Song Dynasty, Tokyo was now Kaifeng in Henan.
Tokyo in the Northern Song Dynasty was today's Kaifeng in Henan.
During the Song Dynasty, Tokyo belonged to Kaifeng City, Henan Province, China.
In the Northern Song Dynasty, Tokyo was now Kaifeng City in Henan Province.