Smoke-free slogans are catchy.

Challenge the limit and surpass yourself. Green x class, first and first. The last two sentences can also be changed to friendship first and competition second. This is the slogan of our class in the last sports meeting.

The introduction can introduce the characteristics and advantages of our class, whether the students are environmentally friendly, love sports and unite. You can express the purpose and belief of this competition, and finally you can emphasize the slogan again to represent your class.