In earlier years, the area north of Xizhimen was sparsely populated. Later, some people planted crops here. Because there were so many cars, people walked out of several avenues. At the beginning of the last century, a railway (now beijing-baotou railway) was built from Xizhimen Railway Station (now Beijing North Station) from south to north, so there appeared some crossings crossing the railway, which were called the first crossing, the second crossing, the third crossing, the fourth crossing and the fifth crossing from south to north, hereinafter referred to as the first crossing, the second crossing, the third crossing, the fourth crossing and the fifth crossing. With the increase of the population along the railway, villages gradually formed near some crossings, which were named Sidaokou Village, Wudaokou Village and Liudaokou Village according to the names of crossings, while crossings without villages were gradually forgotten. However, some people think that Wudaokou is named after the intersection of five intersections, and it is an intersection that meets here from five directions, which is difficult to verify.