Tomb-Sweeping Day went on an outing and saw a rainbow in the sky. What is the poem?

1, written by Zhang Guiguo, a modern poet in China, has the full text: Walking in the Qingming Festival, Seeing Rainbow in the Sky, Peony in bloom, Busy Farming in the Earth.

2. It means that the Qingming Festival is the key period for the emergence of spring-sown crops. From north to south to the inside and outside of the Great Wall, there is a busy scene of spring ploughing everywhere.