Are you trying to shame me for using search engines in a time when virtually all human knowledge has been made digital? I did use a search engine to come up with precise numbers (not google) but not due to me being unknowledgeable. So I am guessing that you are in Malaysia? The Philippines? Singapore? Fair enough, I believe that from your anecdote that people from the upper-class that travel for business use Mandarin, just as much of the world uses English for simplicity's sake when conducting international business. Just as how where I live, the majority of Indian people speak Hindi when intermingling with each other or conducting business between themselves. Yet back at home, there are hundreds of spoken languages and come from many different ethnicities. I am well aware that India is a more extreme example in the modern-day. I am just curious why you are so adamant about pushing that all Chinese people speak Mandarin when that is firstly not true. Secondly, the Chinese government is currently engaged in a massive amount of cultural erasure.