Photos taken on Nov. 13 in Heihe, Heilongjiang province show merchants selling their wares at a morning market. As a strong cold front penetrates northeastern China, the temperature in Heihe decreased sharply to minus 25 degrees centigrade. Nevertheless, the merchants selling farm products still arrived to open their carts from 5 a.m. to 9:30 a.m. Their hats and masks accumulated layers of ice in the freezing weather.