Gaoxu is a city located in China. While specific geographical details are not provided in the source material, it serves as a location within the country's regional landscape.
The name is also associated with Zhu Gaoxu, a prince of the Ming dynasty who was the second son of the Yongle Emperor and Empress Xu. He played a significant military role during the Jingnan campaign and was initially considered a potential heir before being passed over for his elder brother, Zhu Gaochi.
Following his transition to the title of Prince of Han, Zhu Gaoxu attempted to undermine his brother's position and later launched a rebellion against his nephew, the Xuande Emperor. The revolt was swiftly suppressed in 1426, resulting in his execution and the loss of his royal title.