They say it is training - don't believe it.

The Chinese have such a lovely command of language. They use all manner of sleight of words to hide what they are really doing

Take a look at this:

http://en.people.cn/n3/2017/0220/c90000-9180267.html

It is not training. It is a show of force to the US naval fleet in the South China sea. 

China is telling the Pentagon:

We know you got it.

We got it too.

So, do you REALLY want to play?