Eternal Love Through Morning and Night

Gu Xicao and Su Muxue divorce, each carrying the stigmat of 'romantic indiscretion' and 'secret meetings'. However, as night falls, on the battlefield, Gu Xicao turns out to be the Commander of the Dragon Army who guards the nation, while Su Muxue is the Holy Maiden of the Demon Sect. Between flashes of swords and light, they engage in a fierce duel. Back home, a token accidentally exposes some secrets of Gu Xicao, causing Su Muxue to suspect him. She decides to investigate this ex-husband and uncover how many unknown things he is hiding.