Reborn as a Mad Immortal in the City

Why is there such a big difference between this and the pen in my dream?

Why do I say this? The initial concept was good, and the beginning was decent, but once the woman appeared, it all became just low-level showing off. He went on to become a Celestial Emperor, and then, in a bizarre display of personality, he'd go and spar with high school students... (Speechless). Even when threatened by the underworld and initially outmatched in strength, the protagonist still had time to go to class and mess around with kids. Author, please write with the mindset of an adult.

The Ultimate Way of Yin and Yang is here; remember to bookmark it.

Aside from the different character names, the plot is basically the same.

The "protagonist clone theory" is attempting a revival, which is why I dislike the "Jiang Feng Ancestor Theory" and the "protagonist clone theory"—these are fundamentally flawed speculations. They're harmless, but like a gentle stream, they gradually erode the reader's understanding.

Who is the protagonist talking to?

It's pretty good, the only shortcoming is that it suffers from a common problem with online novels: there are unnecessary extra chapters that go off-topic.

The more I look at it, the more childish it seems.

Ignoring everything else, this fleshy wing is the biggest flaw.

The Mafia is Italian; the author has gone too far.