First, it is said that because of colonial relations, Indians have to know English as civil servants, but because they know English, they also like to put on airs in front of China people. Usually, when they are not fluent in Chinese, they will unconsciously add "I said ..." (I said ...) Because my pronunciation is very close to "A San", they have the title of "A San".
Second, in the past, Indians arrogantly claimed that the United States was a pole and the former Soviet Union was a pole, because they were leaders of the Non-Aligned Movement (a loose alliance composed of dozens of countries in Asia, Africa and Latin America), and as leaders of the Non-Aligned Movement, they were well-deserved roofs of the world. Therefore, China people nicknamed them "Ah San".
Third, India was once a British colony, so many Indians worked for the British government.
Fourthly, when we were in the Shanghai Concession, the foreigners we rented were called foreign devils, and the China people we rented were called Japanese devils (later called puppet troops or Japanese devils). The hired Indians are called the Three Demons.