The Central Meteorological Observatory issues weather forecasts for major cities in China every day. The picture on the right shows the coastal city of Tianjin and the inland city of Xi on June 4, 200

The Central Meteorological Observatory issues weather forecasts for major cities in China every day. The picture on the right shows the coastal city of Tianjin and the inland city of Xi on June 4, 2009. The specific heat capacity of water is relatively large, and the temperature change value is relatively small when the same heat is absorbed or released. Tianjin is a coastal city with a small temperature difference between day and night. Xi is an inland city with low water content and large temperature difference between day and night.

So the answer is: Tianjin; The temperature difference in coastal cities is small.