MTL - Studying Science in the Alternate World - Chapter 195 Cuihai Valley research team

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.

Song Zhiyi is really annoying.
Meng Xi has hated her since she was a student and competed with her.
After a dream, she realized that she was living in a novel.
Song Zhiyi is the heroine and a natural winner.
And she’s just a nasty supporting actress who needs to be brought down.
There’s nothing wrong, the heroine and the supporting actress are not born to deal with each other.
Meng Xi became more and more difficult for her, poured her red wine at the banquet, and asked the bodyguard to send her brother to the hospital…
The worst part is that he kissed her when he was drunk.
I don’t know when, everyone thinks they have a leg.
Meng Xi sneered at them: “Bah!”
But Song Zhiyi himself said, “Meng Xi, what kind of relationship do we have?”
Meng Xi was cold to her… unable to get cold: “…”
The arrogant and domineering young lady and the pitiful black and white lotus.
It’s cookies, it’s a weird two-way crush.

Content tags: The rich and powerful family has a soft spot, sweet text, wears books
Search keywords: Protagonist: Meng Xi, Song Zhiyi ┃ Supporting role: ┃ Others:
One-sentence introduction: It’s also really worthy of love
Concept: true love is to understand each other, respect each other, and make people pursue a better self

- Description from novelbuddy

In each world, there would be the ultimate blackened female lead called Lin Xia, and each of them would’ve drowned in the light of their first love, aka the moonlight. Unsurprisingly, all of these moonlights were beautiful, attracting the love and adoration of Lin Xia, but in each and every world, the moonlight would eventually leave in the end, ultimately causing the blackening of Lin Xia’s fragile heart.

Years later, when the blackened Lin Xia finally fell for another woman, the special memories of the moonlight which was buried deep within her blackened heart began to fade, replaced by the light of the true soulmate.

And when the memories of the moonlight faded to almost nothing, the moonlight returned abruptly, only to be rejected by the moved-on Lin Xia. Filled with a crazed sense of jealousy, the moonlight began to destroy the new couples’ lives, only to be hated entirely and finally, crushed cruelly by the angered female lead.

And this is where the story begins, as a world-hopper, Ye SangSang would complete her missions in these worlds.

- Description from Novelupdates