October 4, 2015

"'What will happen is that China will take necessary countermeasures [if the US begins patrolling the area.] The actual measures will depend on how frequently the US decides to enter the airspace or waters close to the islands and what kind of aircraft or ship they plan to send,' Wu Shicun, president of the National Institute for the South China Sea, told the Global Times. 

According to Wu, the first measure would involve diplomatic and military warnings. If the situation escalates, China may dispatch planes to tail US aircraft to decide if there is hostile intent. If this is believed to be so, the next step would be for the Chinese military to expel the US ships and planes."

Read more:

http://www.globaltimes.cn/content/947234.shtml