Beijing's temperature expected to hit 30-year low

　　BEIJING, Jan. 22, 2016 (Xinhua) -- Workers renovate a sightseeing boat on the ice-covered Shichahai lake, a scenic spot in Beijing, capital of China, Jan. 22, 2016. Temperature in Beijing is expected to hit a 30-year low of minus 17 degrees Celsius on Saturday, Beijing meteorological station forecasted. (Xinhua/Yin Dongxun)