Cultivation Begins with Cultivation

Xu Ning, who traveled through time, entered the world of immortality by chance. But the strange thing is that for some reason, every time a monk breaks through the great realm, part of the advanced source will be absorbed; for some reason, there is no cultivation material in this world, and if you don't practice the system of the immortals in the upper world, you can't practice; and for some reason, the immortals in the upper world who adhere to some of the laws of the great world will also die. All of this starts with Xu Ning opening his golden finger and claiming a young beast.