Trapped in the System for Millions of Years, Invincible After Birth

I am Li Xiaoyao. I traveled to a fantasy world with explosive martial arts and became the tenth generation leader of the immortal sect "Yanhuang Sect". I reached the peak of the Heavenly Dao Realm at the age of only twenty-four. My ambitions go far beyond this. I am eager to explore the unknown and higher realms. The turning point of fate lies in the mysterious arrival of the system. The outside world mistakenly believed that I died due to excessive cultivation, but in fact I was involved in the system space. This trap lasted for millions of years. During these million years, my daily routine was extremely boring - tens of thousands of push-ups, sit-ups, and pull-ups; and a million kilometers of long-distance running. I use magic pills as snacks, regard god-level weapons as a pastime, and practicing god-level skills is just a game in my spare time. Time flies, and I finally reach the point of invincibility. When I break free of the shackles and return to the world, I find that the glorious sect of the past has been in ruins, and the new sect leader is actually a thirteen-year-old girl in the Qi Refining Realm. Anger surged in my heart. Since the world has treated me like this, why should I show mercy? Millions of years of precipitation will turn into the flames of my revenge, allowing the world to witness the return of a truly strong man! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.