The Weiyang Palace is about 3 kilometers northwest of present-day Xi'an City and about 2 kilometers north of the south bank of the Wei River. It is located at the highest point of Longshouyuan, which runs from southwest to northeast where the Han Chang'an City is located.

"Shape wins" is the basic idea of ??the Han Dynasty Chang'an City and the location of Weiyang Palace. "Historical Records·Suoyin" quotes Wei Zhaoyun: "Shape wins" means "the terrain is solid, so it can defeat people." "Form victory" refers to the superior mountains, rivers, topography and terrain, which facilitates military defense. According to Li Daoyuan's "Shui Jing Zhu·Volume 19·Weishui River (Part 2)", in the 19th century, during the Qin Dynasty, a black dragon came out of Nanshan to drink from the Wei River. The route it passed later became a mountain range, more than 60 miles long, with its head facing the Wei River. , the tail reaches Fanchuan. When Xiao He built the Weiyang Palace, he "cut off the dragon's head and built it" and "the mountain is the foundation, not a fake building", which reflects the point of "form wins".

In addition to the need to prevent floods, "Xingsheng" also considers other factors, such as safety issues. From the perspective of security, topography and topography were particularly important in the ancient military, which mainly used cold weapons. Having the commanding heights almost provided the basis for victory; from a psychological perspective, Weiyang Palace was the political center of the empire and the symbol of the country. The main hall of the Great Chao Dynasty is located at the highest point of the imperial capital Chang'an, which shows that "it cannot be majestic unless it is magnificent".