Photo taken with drone on Sept. 7, 2018 shows a square decorated with oversized Russian Matryoshka dolls in Manzhouli city of north China's Inner Mongolia Autonomous Region. Manzhouli, a border city with Russia, is benefiting from import and export trade between the two countries and witnessed a rapid economic and social development since China opened up to the world 40 years ago. (Xinhua/Zou Yu)