Strongest Survival by Otome Game’s Heroine (LN) - Chapter Volume 5 4: Academy’s Lesson

Three thousand years ago, gods and Buddhas disappeared all over the sky, and the inheritance of practice was broken. It was not until the ancient civilization was destroyed that spiritual energy recovered. Ten thousand races took advantage of this to invade.

Five hundred years later, the human race gradually rose up and began to fight for control of the land of China, and counterattacked all races.

Three hundred years later, Fang Yi, the Lord of the Great Dao, slaughtered all clans, destroyed all the heavens, stepped out of the myriad realms, and fought against the Dao of Heaven.

In desperation, Fang Yi sacrificed blood to eight hundred small worlds, reversed time and space, and was reborn nineteen years old.

In this life, he wants to live a more relaxed life, perfect his Dao Xin, and conquer the Dao of Heaven again.

- Description from novelbuddy

Shen Yuan, a normal human who was living his life peacefully on earth died mysteriously, only to get reincarnated into the world of cultivation with an unknown bloodline so powerful that it even surpassed his chest system....“Hmm, looks like becoming an alchemist might be good. System, purchase the Alchemy knowledge.”[Ding!][Congratulations Host, for acquiring Heaven Refining Alchemy Sutra.]...Follow to see the journey of how Shen Yuan creates the strongest harem since the Primordial times to journey the three thousand world.

She was the Spirit Master of the Tea Hill. He was the Head of the Kunlun. They met each other by chance in Jiangnan. With many twists and turns, they got married. Unexpectedly, there were plots in store for them. After the resurrection, he forgot her… But she had his child… To meet him again, she endured the torture of the naga poison; for the people of the Tea Hill, she chose to be a devil… But fate still pushed her to a path without a turning back… She killed demons and devils but was used by others… Finally, she had to stand opposite to him… For the happiness and benefits of the three realms, she was incarnated as the Creation Goddess… She was the Spirit Master of the Tea Hill, Jiang Wuyou…