Yinruo is a poisonous plant. According to historical legends, after the fall of the Southern Tang Dynasty, the last emperor Li Yu was captured. From a supreme emperor to a prisoner, he lived a life of tears.
Li Yu is proficient in rhyme, poetry and poetry, and is proficient in everything. He often uses poems to commemorate his former homeland and homeland. After Li Houzhu composed the poem "Yu Meiren", his poem easily aroused people's hatred for the country's subjugation. When it reached Taizong Zhao Guangyi, he was shocked. He thought that although Li Yu had surrendered to him on the surface, he was secretly trying to use the poem to He evoked people's mourning for the motherland to shake his rule, hoping to make a comeback when the time came. If not eradicated, it would actually be the disaster of the Song Dynasty. So a secret order was issued, and people were sent to mix the poison from Burma's tribute into the wine to kill Li Yu. An hour after Queen Li took the main drink, she suddenly had difficulty swallowing, her teeth closed, and she died of suffocation. In order to keep the matter secret, Zhao Guangyi abandoned the common poisons in the Central Plains, and instead specifically chose Yinruo poison sent as tribute from Myanmar. According to folk rumors, it was made from Yinruo bamboo leaves.