The Great Dao's Azure Emperor

Heaven, Earth, and Humanity each keep to their own domain. The immortals in the heavens sit high above, watching the mortal world with cold eyes as flowers bloom and fade and clouds gather and drift. The Human Emperor rules the mountains, rivers, and lands of the mortal realm, commanding the Nine Provinces and holding the fate of the realm in his hands. The Underworld governs yin and yang and the cycle of reincarnation, deciding the birth, aging, sickness, and death of all people with a single thought. Then one day, the law of conservation is broken... Han Qing, armed with a peachwood sword and riding a blue ox, sets the world right and restores order.