I Ran Off with the Immortal Venerable's Baby

The Venerable Immortal Guqin cultivated the ruthless path, yet his cultivation was damaged for over a century because he fell in love. Everyone said he was deeply in love with his only disciple, Jiang Suilan. Jiang Suilan thought so too. That is, until the battle between the immortals and demons at Pingzhou. There, Jiang Suilan saw Lou Bing, a demon lord's aide who looked almost exactly like him, and witnessed his master's composure crumble, leaving him nearly frantic. He remembered someone from his sect once mentioning that before he joined Yanyishan, the Venerable Immortal Guqin had a junior brother named Lou Qiongshu, who had died by accident, his spirit scattered. The jade branches and trees became ice. The reasons behind it all, and his master's mercurial attitude toward him, were now clear. So Jiang Suilan ran away. * Yin Huaimeng, the Venerable Immortal Guqin, entered the immortal sect at ten and had a smooth path of cultivation. At five hundred, he met his junior brother, Lou Qiongshu. Falling in love unsettled his Dao heart, and when his junior brother died, he was devastated and went berserk. Later, he took on a disciple and did with him all the things he had never dared do with Lou Qiongshu. He thought he was only seeking comfort, and that he had no real feelings for his disciple. He never imagined that one day, when his disciple disappeared, he would abandon cultivation and all regard for his dignified bearing, take up his guqin, and swear to search every corner of the Nine Provinces. Everyone said the Venerable Immortal Guqin was about to fall to the demonic path and become the Demonic Guqin. * When he met Jiang Suilan again, Jiang Suilan's belly was slightly rounded, and he had someone new by his side. He said casually, "I'm pregnant. The child is his." With a single thought, Yin Huaimeng fell to the demonic path. Older master and younger disciple / melodramatic, cliched tropes / chasing his wife to the crematorium Theme: How to rebuild trust in a romantic relationship