People walk on snow-covered field with the Washington Monument in the background in Washington D.C., the United States, on March 21, 2018. A late-season nor'easter, the fourth of its kind in three weeks, is targeting the northeast United States on Wednesday, bringing heavy snow and strong winds to the region. Washington, which is already snow-covered, is expected to see up to 6 inches of snow, as some models suggesting much high totals for the capital. Federal offices are closed for the snowstorm as the White House announced early Wednesday that all public events for the day were cancelled. (Xinhua/Ting Shen)