The investor must have had faith in bitcoin and that is why he keep holding and buying it! How I wish I have such huge fund to invest into bitcoin like this Chinese mysterious investor. I think this will make him to be among the whales and in future he or she may be people that will decide what happen in future in cryptocurrencies market.
It is still funny though why the OP or whoever must have imagined this person to be a Chinese investor? Moreover, let us even imagine he is; what is the wrong thing in holding even as much as 1million bitcoin as far as there is simply no problem with it in the first place? Whatever anyone wants to do with their holding is their choice and business, but trying to bring about some funny and lame assumptions like the article and the OP are insisting does not make any sense.