Reincarnation: My Wife is Cultivation Grandmaster

Caught in the whims of destiny, Feng Xuanyi, once the formidable Demon Lord, finds himself reborn into the past. But here's the kicker—his beloved wife has ascended to the exalted realm of Grand Mastery! Now, armed with the daunting task of convincing his wife that he's truly her husband, he blurts out in desperation, 'Oh, immortal beauty, I'm genuinely your better half. Do you trust me? What? You want evidence? I know of the azure lotus at your chest and the crimson birthmark at the root of your thigh. Hold on, let's talk this out, no need for violence!