Introduction to the parapet: is the top part of the arcade facade, commonly known as the "wind tunnel wall". It is mostly symmetrical in three horizontal sections, forming a wavy undulating skyline. According to the shape, it can be divided into the European and Asian Renaissance style (a low horizontal wall that runs through the entire facade, and some railings are Aquarius-style), and the European and Asian Baroque style (the two wings of the corrugated gable are highlighted to look like pieces of Baroque style). style gable), Haikou Nanyang style (circular holes are opened in the parapet to reduce the damage caused by typhoons).