Ertiaocheng is the best place to learn about the architectural culture of the Edo era in the vicinity of Kyoto. Ertiaocheng, also known as Ertiaochou Royal Palace, is located in Kyoto, Japan. It was built in 1603 A.D. and is the power symbol of the Edo Shogunate. There are about 500 meters in East and west, 400 meters in North and south, and trenches. The Royal Palace of Benwan and the Royal Palace of Erzhi pills are the main buildings of the two cities. The architecture of "Erzhi Wan" is very distinctive. The walls and doors inside the hall are painted with famous paintings by Safari painters, which are exquisite. The blooming season of plum and chrysanthemum is a good time to visit. The Ertiaocheng was built under the orders of Kazuoka Tokugawa. The purpose of the construction is mainly to let the people and generals of Tokugawa have a resting place when they visit Kyoto. It witnesses the rise and fall of the Tokugawa family and is the place where the Japanese historical dynasties change. The two cities are surrounded by stone walls and moats. In the city, there are Benwan Royal Palace, Erwan Royal Palace, Tangmen, Black Academy, White Academy, Neighborhood (Courtyard), Tianshou Cabinet and other ancillary buildings in the corner of the castle. The Royal Palace of Benwan and the Royal Palace of Erzhi pills are the main buildings of the two cities, which are located in the composition center of the space of the two cities. The second pill courtyard is a one-way swimming courtyard. The water surface is curved and the spring is clear. There are lakes and rocks along the Bank of the pool. The shape is luxurious and the matching fitness is high. There are three islands in the courtyard, and a three-stage cascade is arranged in the center of the pool. The water court is surrounded by trees and plants, water surface, plants and lake stones, which are interesting. The style of the courtyard is relatively extensive and has a certain sense of strength. However, there are many exquisite and rigorous methods for the treatment and arrangement of some local water stones and plants, which are in harmony with the surrounding buildings. The interior decoration, decoration and detailed structure of palace buildings are exquisite, luxurious and properly handled. The eaves and eaves are embellished with pure gold foil. Bright gold and dark building wood components contrast each other, showing the richness of General Tokugawa and the luxury of his mansion. The structures of the two cities have become concrete epics, and the golden colors on their buildings are just a reflection of the past traditions. As the crystallization of traditional culture and art, they deserve to be preserved and maintained with human pride.