Five avenues in the south, East and west of the downtown area of Tianjin are juxtaposed with five streets named Chengdu, Chongqing, Dali, Munan and Ma Chang. They are the most complete architectural complex of foreign buildings preserved in Tianjin and even in China so far. We in Tianjin call them "Five Avenues". Five avenues area has gardened houses with different national architectural styles built in the 1920s and 1930s. Among the more than 300 typical buildings, English, Italian, French, German and Spanish, there are many Renaissance buildings, classical buildings, eclectic buildings, Baroque buildings, courtyard buildings and Chinese-Western buildings, which are called the World Architecture Expo Garden. The "Tianjin Xiaoyang Building, Beijing Siheyuan" is the most incisive summary of the historical architectural styles of the two major cities of Tianjin and Beijing. Xiaoyang Building and Siheyuan not only generate different cultural genes of Tianjin and Beijing, but also reflect the collision and blending of modern Chinese and Western cultures. From Tianjin's Governor Yamen to Beijing's Forbidden City, from garden houses in concessions to royal houses in Imperial cities, in late Qing Dynasty, powerful and powerful people, Beiyang warlords, foreign compradors, financial magnates and industrial tycoons - - - a series of dramas, comedies, tragedies and farces in modern Chinese history have witnessed the rise and fall of China, and I am worthy of recommendation from Tianjin people.