My cow ran away

In the mystical fantasy world, Chen Chang'an was confined to the forbidden library as soon as he arrived,
The sky literally started falling from the very beginning.
Fortunately, at that very moment, his system awakened,
All he needed to do was to read scriptures, and he would keep getting stronger.
Thus, with the library filled with various books, a smile appeared on Chen Chang'an's face.
........
[Ding! You've read Daoist Scriptures and gained a level in 'Heaven Opening Law', currently Level 6.]
[Ding! You've read the Secret Manuscript of Ten Thousand Buddhas, gained a level of Divine Skill 'Six Daos of Reincarnation', currently Level 8.]
[Ding! You've read the Secret Records of Demon Gate, gained a level of Divine Skill 'True Demon That Shakes The World', currently Level 7.]
....
[Ding! Due to the Laws of All Heavens being added to your body, embellished with trembling Literary Qi of the Great Dao, you're rewarded with: Become a Saint on the spot!] 
Years later, as time turned everything old, the world above and the world beneath were already in a desperate turmoil, with immortals descending to the mortal world, and gods and demons performed chaotic dances, making the lives of people unbearable.
Chen Chang'an stepped out of his seclusion one day, looking at the heavenly gods and buddhas scattered across the sky.
“I'm not targeting anyone in particular, but everyone here is garbage!”
That day, he swung his sword and parted the heavens, ever since then, Heaven belongs to Heaven, Earth belongs to Earth!
....!
[PS: Extreme mystical fantasy flow, invincible style! Light readers beware!] 

Become a Saint through Studying! Exposed by my little junior sister!

Strike down the Great Perfection Heavenly Venerate!


Gods and demons shadowing him from behind!


He astonishingly stepped into the realms of the eight most pure lands where no one has been before, nor will there be any after.


But then he found that this was just the beginning.


The Dao Palace nurtures ancient saints!


Now, he is here, challenging the ancient forbidden lands with an attitude of contempt for the world!


Now, the two legendary laws have reemerged as well.


And they are both in their accomplished stages!


What is it that he wants to accomplish by deploying two great sovereign laws at the same time?"


"No good! It seems like he is going to banish the forbidden lands?"


"What? Banish the forbidden lands? How is that possible?!"


Chapter 150: All heavens are silent, gods and demons roar together, above the ninth heaven, he transforms into a deity, slaying gods and Buddha!_5