Once the requirements were met, Du You checked the structure of his Skill Crystal and, finding no issues, he prepared to upgrade. He knew that once the upgrade was complete, he could no longer modify his Skill Crystal.
The Skill Crystal represents the future of one's skill; therefore, each step must be perfect.
An imperfect structure could prevent the skill from advancing beyond a certain point, making further improvement difficult. After reaching the seventh tier, one's own limitations become an even greater obstacle than any previous shackles.
To continuously advance one's skills, potentially to the eighth or even the ninth tier, one must pay close attention right from the start. Once Du You confirmed there were no problems, he began to burn Crystal Coins.
With ten Crystal Coins merged, Du You's skill level started to rise, quickly reaching level 61.
Upon opening his panel, Du You found the changes were just as he expected; the entire skill had undergone a transformation.
