After crossing into the world of Xianxia, Zeng Xiaoyu received a cultivation technique upgrade system. From then on, no matter what cultivation technique is in Zeng Xiaoyus hands, it will be able to glow with amazing brilliance.Zeng Xiaoyu: This exercise is only the top grade of Huang, and the grade is too low!System: Its okay, I can upgrade it to a mysterious high-grade.