From China Daily:
Russia will soon return 174 sq km of territory on the northeast border to China, ending more than 40 years of negotiations.
The two countries will sign an agreement to this effect during Russian Foreign Minister Sergey Lavrov’s two-day visit to Beijing that starts today.
According to the agreement to be signed, Russia will return Yinlong Island (Tarabarov Island) and half of Heixiazi Island (Bolshoi Ussuriysky Island).
The islands are at the confluence of the Heilongjiang and the Wusulijiang rivers that serve as the natural border between the two countries.