BEIJING, June 16, 2016 (Xinhua) -- Ran Chengqi, spokesman for the BeiDou Navigation Satellite System (BDS), shows a watch based on the BDS during a press conference on the development of the BDS in Beijing, capital of China, June 16, 2016. The Chinese government on Thursday released the white paper about the development of the BDS, which is independently developed and operated by China. (Xinhua/Li He)