Dinghai is a famous historical and cultural city. During the Opium War, three generals fought bravely against the enemy and made Dinghai a tragic city. At the same time, it is also a famous place where Ningbo merchants made a fortune, which gave birth to modern commercial civilization. At present, West Street is the most concentrated street of old wooden houses in Dinghai, the most prosperous commercial street in the early days of Dinghai, and the oldest and best-preserved ancient street in Dinghai. It is also the most concentrated place of wind and fire walls in Dinghai ancient town. Wind-fire wall is the characteristic of buildings in this area. Wind-fire wall, also called public wall, is 6 to 8 meters high, 0.58 meters thick, 55 meters long and 20 meters short. Building a moon gate on the street corner can separate blocks and prevent fire. .