This is the opening sentence of a famous poem "Mulan Poetry/Mulan Ci" in the Southern and Northern Dynasties. It depicts the scene of two rabbits running freely in the field and grass, and shows the vibrant and dynamic scene of nature through concise and vivid language. This image can also be regarded as a metaphor for the heroine Mulan's indomitable and fearless spirit, and she moves as nimbly as those two rabbits. The whole poem "Mulan Poetry/Mulan Ci" takes this as an introduction, telling a touching story about a woman disguised as a man to serve her father and serve the country under the background of rich spring scenery, which entrusts the author with his immortal feelings and thoughts on heroes.