There are 4 volumes in the series, one volume per quarter and each volume containing six short stories. From the perspective of children, they can experience the beauty of spring, summer, autumn, harvest, winter collection, seasonal scenery, and thousands of ecological beauty. This volume is "Winter". This volume tells that winter was finally arrived and it is soon the time when Nini's parents would pick her up. However, Nini, who has gradually become accustomed to rural life, began to truly fall in love with the four distinct seasons of the countryside. With the arrival of “Dahan”, the last big cold solar term in the twenty-four solar terms, she reluctantly returned to her home in the city with her parents. The charm of nature and the taste of agriculture that countryside life revealed to her has become her eternal precious wealth.