Ding, you used a skill point for mathematics, you upgraded to the intermediate level, and gained the skill attribute Mathematical Thinking Ding, you used a skill point for writing, and the writing was upgraded to advanced level, and you gained the skill attribute Essay Surge! Ding, you use it for knife skills After acquiring a skill point, the knife skill is promoted to advanced level, and the skill attribute is obtained, and the knife can be used to solve the problem.