ya, Welcome man, enjoy the forum, its pretty fun and you learn all about the great miliatry knowledge of the world, have a good time and remember, be agressive :rambo:
Island of Hainan is actually part of China, but when a Chinese uses the trmo mainland China he's referring to it as opposite to Taiwan.
They still consider Taiwan part of the country.
There are other threads on this, we can't go off topic.
Generally, the world does not recognize the right of China to annexe Taiwan.
We tend to view them as two separate nations.