1) The International Monetary Fund (IMF) and the World Bank are international financial institutions that work to promote global financial stability and economic development.

2) The Yangtze River, also known as the Changjiang River, is the longest river in Asia and the third-longest in the world, stretching over 6,300 kilometers (3,915 miles). It holds immense cultural, historical, and ecological significance for China and the surrounding regions.

3) Many mountains have cultural and spiritual significance for local communities and are often considered sacred or revered in religious traditions.

4) The word "oxygen" contains two vowels: O and E.