Foreign Ministry spokeswoman Hua Chunying warned the US on Wednesday against "hyping up militarization and stirring up trouble," while promising that China would take all necessary measures to defend its sovereignty. She said the US action could be risky, AP reported.
The bomber flyby this week over Scarborough Shoal, which China took from the Philippines in 2012, came after US Defense Secretary Jim Mattis accused Beijing of "intimidation and coercion" and declaring the Indo-Pacific a "priority theater" for US forces.
China has steadily built up its military presence on disputed islands in the South China Sea, which it claims almost entirely.