During this time, Du You did not spend it idly. After a lot of research into knowledge and information, Du You gradually understood the power enhancement of this world. All the skills in this world are runes.
The initial advancement of a Professional is first the skill light point, then it becomes a Skill Crystal, and step by step, it finally nurtures a complete special rune which directly merges with one's spirit.
However, this world is different. One must first rely on one's own various energy channels for cultivation. Once a certain degree is reached, these energy channels will form a special rune, which will merge into different parts of the body.
