I Really Don't Know How to Become an Immortal.

You say he is useless, right? He also has a mysterious physique, and training is as simple as drinking water. He can build a foundation in the blink of an eye. He is simply the illegitimate son of heaven! You say he is a genius, right? He is also mentally ill and takes the initiative to dissipate his kung fu all the time. His cultivation level is instantly cleared, and he is still a mortal! So, the question is, this immortal... Is he cultivating or not?