What is the reason why the arcade has become one of the most distinctive buildings in the southeast coastal towns?

It's raining, and shelter from the rain is also one of the important reasons. It is an architectural form evolved from the combination of western ancient architecture and traditional culture in southern China. It can prevent wind, rain and sun, especially adapt to the subtropical climate in Lingnan, and its commercial practicability is more prominent. There are many such buildings in Guangdong, Guangxi, Fujian, Hainan and Gannan. For example, Shangxiajiu in Guangzhou, Zhongshan Road in Xiamen, Zhuhai Street in Beihai and Jinling Road in Shanghai (an early Cantonese community). This kind of building is built to adapt to the wet and rainy weather and dense commercial buildings in the south. Shop downstairs, people live upstairs. Its arcade across the street not only expands the living area, but also provides rain and sun protection, which is convenient for customers to choose and buy goods freely. It is one of the most distinctive buildings in southeast coastal towns.