Final answer:
The city found at latitude 31 degrees north and longitude 121 degrees east is Shanghai, China.
Step-by-step explanation:
The city found at latitude 31 degrees north and longitude 121 degrees east is Shanghai, China. Shanghai is a major city in China and it is located on the eastern coast of the country, near the mouth of the Yangtze River. It is known for its modern architecture, vibrant culture, and economic significance.
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