Cheng Mo thought he was a time traveler. Now that we have traveled through time, how can we live up to our status as a time traveler if we don't strive for immortality?
He discovered that he could travel back and forth between the immortal and mortal realms. He only does three things: purchasing, shipping, and settling accounts. The difference is his cultivation.
While others are cultivating, he is still lying down; while others are working hard, he is still lying down. Finally, he became the most troublesome person in the Immortal League.