Heilongjiang is a province in northeast China. It is the northernmost and easternmost province of the country and contains China's northernmost point and easternmost point. The province is bordered by Jilin to the south and Inner Mongolia to the west. It also shares a border with Russia to the north and east. The capital and the largest city of the province is Har…Heilongjiang is a province in northeast China. It is the northernmost and easternmost province of the country and contains China's northernmost point and easternmost point. The province is bordered by Jilin to the south and Inner Mongolia to the west. It also shares a border with Russia to the north and east. The capital and the largest city of the province is Harbin. Among Chinese provincial-level administrative divisions, Heilongjiang is the sixth-largest by total area, the 20th-most populous, and the second-poorest by GDP per capita after only Gansu province.