"Why do I also need to consume skill points?" Song Jian froze in place. After a skill point disappeared, the Experience Points of the Insight Skill once again surged rapidly, this time the speed was very fast, and in the blink of an eye, it rose another level.
Thirteen, fourteen, ...
As it approached level fifteen, the increasing speed once again slowed down, and Song Jian's face immediately fell. Just as expected, another skill point vanished, and the speed of increase picked up once again.
One must know that although Song Jian didn't master many skills, due to proficiency, he had saved quite a few skill points. However, there would always come a time when the proficiency of these skills reached their maximum values, and as the levels became increasingly difficult to raise, the skill points correspondingly became more precious.
Originally supposed to be a cost-free upgrade, now it was clear that Song Jian's sacrifice had grown larger.
