Metropolis: My Martial Arts Has Become Weaker

My name is Li Yan, and I traveled to a parallel world. The advantages are huge. Not only have I inherited a powerful identity, but I also have a martial arts mutation system! The lion's roar skill, the Lingbo Weibu, and the Eighteen Dragon Subduing Palms can be obtained in minutes. And it can also mutate! But... System, you are playing tricks on me. Why is the lion's roar skill so high-pitched that it is invincible? How can running in the snow be so fast? How could the Eighteen Dragon Subduing Palms be Niuwan Wan? Li Yan: "I just want to be a hero, so how can I become a national idol?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.