An undated file photo of a church on Heixiazi Island (Bolshoi Ussuriysky Island) at the confluence of Heilongjiang River and Wusulijiang River that serve as a natural border between China and Russia. China will restore sovereign control over half of Heixiazi Island from Russia from October 14, 2008 after the two countries jointly unveil a stone monument on the Island. Heixiazi Island was occupied by the former Soviet Union during a 1929 border skirmish. [China Daily/CFP]