In order to avenge the Qi State, King Yan Zhao practiced rituals and promoted his officials, built a golden platform, and finally achieved his wish. It means that the emperor and his ministers complement each other, and Li He's poem said this, which is related to his sinking into subordinates and not being able to recognize talents, which reflects his resentment at not being recognized for his talents. For Li He's story, please refer to Han Yu's "Taboo" (his father's name is Jin Su and he is not allowed to take the Jinshi examination) and Li Shangyin's "Li He's Short Biography".