The Older Brother of My Student is My Secret Crush - Chapter 42: Eyes Brushed.

Yang Tian, a Legendary Beast Tamer who tamed Legendary Monsters such as the Six-Wing Purple Gold Lion, the Undead Lich, and the Thousand Feet Ghost Vine has returned to three days before the Post-Apocalyptic Era begins.

“Girls from the Lin family were so beautiful that they were destined to be concubines of the powerful.”

Recalling the last memories of this body, Lin Haoxue only felt hatred… Even if the He family was the most powerful family of the Wuhuan Empire, so what?

I swear that if I don’t exterminate your He family, I, Lin Haoxue, am even lower than a demon beast! Therefore, the most powerful He family situated in the capital of Wuhuan Empire became the first challenging target of this twelve-year-old good-for-nothing Second Young Lady from an average family of Taixing town.

Even without any profound power running in her veins, the adventure she had in Mount Bilu’s Falling Cloud Stream activated her eight elemental profound veins. Overnight she went from a having a garbage constitution to being a Middle-stage Profound Master realm cultivator, and since that fateful day, Lin Haoxue started down her journey of otherworldly domination!

- Description from Novelupdates

He went from an ordinary student to a god-level master in manufacturing.
Continuously progressing, processing range from hundreds of meters to tens of atoms, processing precision from microns to nanometers to atoms and molecules, everything was possible.
Wassenaar Accord? The embargo against China? What we have banned are technologies that China doesn’t care much about. Most of the member states have to import technology from China, shouldn’t the member states have a meeting to discuss and bring in China as well?
Forbidden chip sales? Is there a mistake? We barely managed to maintain our low-end market with a large amount of subsidies, it’s already good enough that China didn’t initiate an anti-dumping investigation. President, are you sick?
Hmm, it seems like living cells can be processed precisely as well. Do you need to refine the cancer cells that you are spreading out?

- Description from Novelupdates

This crossing is so strange, death crossing, game crossing, etc. are probably barely acceptable, but why can you cross even if the fish tank is broken?

and actually passed through the magic tree in “OVERLORD” that is said to be able to destroy the world?

No! It is sad enough to regenerate into a plant. The protagonist, Ainz Ur Gong, the undead king, has also accepted the adventurer’s guild mission and wants to kill me!

I want to change my destiny! Live! I want to-surrender!

Ainz: Since he has accepted the job commission from the Adventurer’s Guild, deliberate failure is detrimental to the prestige of Ainz Ul Christine (the “surrender” button has been deducted)

actually died as soon as he crossed, but there is still a chance to return~ from the beginning of the magic tree to this world.

I must change my destiny this time! Live!

- Description from novelbuddy