Aerial photo taken on Aug. 22, 2019 shows the Sino-Russian 500 KVA (kilo-volt-amp) back-to-back converter station in Heihe, northeast China's Heilongjiang Province. According to statistics provided by State Grid Heilongjiang Electric Power Co., Ltd. Heilongjiang Province has received 1.88-billion kWh of electricity generated by Russia through the cross border power grid system up to Aug.18, 2019. (Xinhua/Wang Jianwei)