Final answer:
The Amur River is the 10th largest in the world, forming the border between China and Russia, and flows into the Strait of Tartary.
Step-by-step explanation:
The 10th largest river in the world that forms the border between China and Russia and empties into the Strait of Tartary is the Amur River. The Amur River is a major river in the eastern part of Asia. It plays a crucial role in demarcating the border between the two countries and is an essential part of the regional ecosystem, offering vital transportation and agricultural resources. While large cities like Shanghai are located on the Yangtze River, and are critical urban centers in China, the Amur acts as a border river and does not lead to these metropolises. However, it is still a significant waterway for trade and commerce, much like the Yangtze plays an important role for cities such as Wuhan and Chongqing.