Class emblem is a symbol representing the class, which can show the characteristics and significance of the class through patterns, colors and shapes. Green grass, books and sunflowers can all be used on the class emblem, and each element has its own meaning.

Qinghe symbolizes vitality, growth and hope. Qinghe is a new seedling in the farmland, representing the spirit of vigor and vitality. The use of Qinghe in the class emblem can imply that class members have positive and enterprising qualities.

Books represent knowledge and learning. Books are tools for us to acquire knowledge, symbolizing the pursuit and desire of class members for learning. Adding the elements of books to the class emblem can express the importance of class focusing on learning and knowledge.

Sunflower is a sunny flower. Sunflowers represent hope, sunshine and optimism. Using the image of sunflower in the class emblem can convey the energetic and optimistic spirit of class members.

Therefore, the combination of green grass, books and sunflower in the class emblem can convey the meaning that class members are diligent, optimistic and positive. The design of the class emblem should be determined according to the characteristics and values of the class, so as to better reflect the spirit of the class. I hope this answer will help you!