100% pure Bullshit.
first of all you have no way of knowing who has how much and you are talking out of your ass when you say China has 50% of bitcoin supply.
secondly you have no idea what you are talking about when you say "early birds" are in China. all those early adopters of bitcoin who were mining bitcoin when you didn't even know what bitcoin is, were from anywhere but China. China came in when they started to produce ASIC miners and after a while when price went to ATH back in 2013 and slowly "mining farms" grew and mining farm doesn't mean China has a lot of supply of bitcoin.
also miners sell their coins to cover the cost of mining and pay the bills, which means they can not be holding big amounts
and in the end you don't even know what the word pump and dump means, take a look at the charts and educate yourself about pump and dump before giving opinion about something you don't understand.