Love is like wearing armor. Where did it come from?

Love is like wearing armor. According to relevant data, "Love is like wearing armor, like holding a sword. The general hurried on without chasing rabbits. If you miss the flowers and plants in this world, you will find 10 thousand excuses to stop. However, you are clear-headed, determined, well-developed and know where you are going. So please go all the way, Dai Wangxing and Dai Yue. " This passage is from Dong's quotation.