So I'm Actually an Ultimate Expert

After transmigrating to another world, Lin Han assumes he’ll live an ordinary life. But what he doesn’t know is that... The pet he raised becomes a demon god and conquers the Three Realms. The useless disciple he mentors makes rapid progress in cultivation, repeatedly crushing monstrous geniuses and becoming a realm lord. The immortal emperor treasures his ink paintings as family heirlooms. Several immortal emperors nearly come to blows over the fire poker from his home. Many years later, Lin Han slaps his thigh. "So I’m actually an unparalleled master!"