File photo taken on Jan. 25, 2017 shows traders work at the trading floor of the New York Stock Exchange in New York, the United States. The Dow Jones Industrial Average on Wednesday closed above the psychological mark of 20,000 points for the first time ever, while the other two major indices also finished at record highs, boosted by a batch of generally positive earnings reports. Jan. 20, 2018 reaches one-year mark for Donald Trump as the 45th president of the United States. One year into U.S. President Donald Trump's presidency, the uncertainties and anxieties over his unconventional playbook appear to have not diminished. As he seeks to implement his campaign promises, which seem controversial and even unacceptable to many, rifts, feuds and controversies dogged the year and 2018 would probably not be any different. (Xinhua/Li Rui)