The bully really stems of that some do not recognise "one China", which is not the point of view in Beijing. You cannot say it's bully if Taiwan is part of China.
If you have doubt, search "1992 Consensus".
If you have doubt, search "1992 Consensus".
I believe you read Chinese, so please check: https://zh.wikipedia.org/wiki/%E4%B9%9D%E4%BA%8C%E5%85%B1%E8...