US President Donald Trump with China's Xi JinpingChinese President Xi Jinping sent a congratulatory message to US President Donald Trump marking the 250th Independence Day, Beijing confirmed Monday. This comes as an unusual public gesture on a holiday China typically passes over in silence."This year marks the 250th anniversary of the independence of the United States. President Xi Jinping, on behalf of the Chinese government and the Chinese people, has already sent a congratulatory message to US President Trump," foreign ministry spokeswoman Mao Ning told reporters in Beijing.China does not usually publicise leader-to-leader greetings around the American holiday. In past years, Beijing's involvement has been limited to sending a vice foreign minister to a reception at the US embassy, a pa