Germany, Berlin.
About fifteen years ago, the International Mathematical Union established its headquarters in this historic city.
The headquarters is located in the city center.
The stated purpose of establishing the headquarters is to enhance the organization's operational efficiency and support capabilities for global mathematical collaboration.
Of course, having a headquarters can indeed serve some functions at times. At least there's a place to store records of various funding projects.
The reason for placing the headquarters in Berlin is also because it can receive funding from the German Federal Ministry of Education and Research and the Berlin State Government.
In recent years, due to Huaxia's growing influence in the field of mathematics, the number of Chinese faces at the headquarters here has been increasing.
After all, the proportion of Huaxia mathematicians on the Union's highest governing body, the council, is also increasing every year.
