I have a Hong Kong server from aliyun (biggest cloud service provider in China), which has low latency to okex, binance, and bybit. okex uses aliyun hong kong, bybit uses aws singapore, binance uses aws as well, but they don't seem to use just specific location(at least I can not find it out yet), but like I said, when I send request from Hong Kong, they route me to AWS Hong Kong. bybit route me to Singapore when I send request from Hong Kong.