The Winter Solstice (冬至）

Yesterday was one of the traditional Chinese festivals - The Winter Solstice. The Winter Solstice: it means the/signifies that cold winter is coming. People will eat some (both 'will' and 'some' are understood and unnecessary) tonic foods and/or sweet dumplings in on this day. I ate mutton hot pot with my family yesterday. Mutton is a good food for body nutrition and health. I ate too much yesterday, so that I might have gained weight. I need to walk and run/exercise it off.

Pretty good! no glaring errors, just some suggestions。 Winter in Taiwan is no big deal, since half (south of hualien) is tropical and half (north of hualien) is sub-tropical

The Winter Solstice

Yesterday was one of the traditional Chinese festivals - The Winter Solstice. The Winter Solstice: It means the cold winter is coming. People will eat some tonic foods and sweet dumplings on this day. I ate mutton hot pot with my family yesterday. Mutton is a good food for body and health. I ate too much yesterday, so that I gained weight. I need to walk and run it off.

The Winter Solstice

Yesterday was one of the traditional Chinese festivals - The Winter Solstice. The Winter Solstice: It means the cold winter is coming. People will eat some tonic foods and sweet dumplings in this day. I ate mutton hot pot with my family yesterday. Mutton is a good food for body and health. I ate too much yesterday, so that I gained weight. I need to walk and run it off.

Correction:

The Winter Solstice

Yesterday was one of the traditional Chinese festivals - The Winter Solstice. The Winter Solstice: It means the cold winter is coming. People eat some tonic foods and sweet dumplings on this day. I ate mutton with my family yesterday. Mutton is a healthy food. I ate too much yesterday and may gain weight. Therefore I need to walk to burn off the extra calories.