Well it is not the Chinese who hate bitcoins, it is Chinese government that hate bitcoins, the basic facts that made them to hate bitcoins is like the examples set by ICO, where many investors loose there money, and had to face huge downfall. They might be feared that same will happen to bitcoins. And other reason may be that many economic class people or citizens of China are investing in bitcoins that will lead to low income of banks and no control on taxes and returns they imposed on transactions. As bitcoins allow their users transaction free from fees. This leading to low contribution of bank to country's economy.