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!

These four places are indeed teeming with ancient divine spirits.


Under such circumstances, it is not just Chen Chang'an, the newly promoted Heavenly Venerate, who might find it challenging; even a supreme Heavenly Venerate like the Yin Emperor would likely face a tough situation if he carelessly ventured into these places.


The next moment, as if sensing Chen Chang'an's hesitation, the Yin Emperor continued:


"Officer Song, the appearance of ancient divine spirits in the Demon World is truly unexpected."


"However, if we can establish a foothold there, it will be hugely beneficial to our Rebirth Hall."


"Officer Song, you possess the Primordial Demon Dharma Aspect, so there might actually be a chance for you to achieve enlightenment in that place."


"Of course, if you are unwilling to go, it's okay. I won't force you."


Hearing the Yin Emperor's words, Chen Chang'an fell silent for a moment.


Then, after weighing something in his mind, he said to the Yin Emperor:


Chapter 147: Deploying Troops to the Demon World, Dark Dirt Obstructing the Road!_2