This manga really lacks in the subject of character growth in power. He learns real moves from memories of fictional works. That is original, but it is hard to swallow, sometimes.
two years ago he was too old to reach high cultivation level, and now he raised one minor realm two years later and he is not too old anymore?
Also the father conveniently punishing him locking him up on the only place that he could make use of his cheating ability. Second brother coming to see...