Huai Nun Tzu

Liu An (c. 179–122 BC) was a Chinese monarch, philosopher and cartographer of the Han dynasty. He ruled the Huainan Kingdom and advised Emperor Wu of Han. He is renowned for editing the "Huainanzi" in 139 BC, a significant work synthesizing Daoist, Confucian, and Legalist philosophies. Liu An is also popularly credited with the invention of tofu. Legends depict him in various ways: as an author-editor, a rebel who committed suicide, or a Daoist adept who achieved immortality. He was the grandson of Liu Bang, the founder of the Han dynasty. His life ended tragically when he committed suicide in 122 BC after his alleged involvement in a coup attempt was revealed.