MTL - Naruto: Ten-year-old Kaleidoscope, Opening Betrayal Konoha - Chapter 143

The once revered Alchemy Emperor returns to his fifteenth year. In this lifetime, he not only seeks to rectify all past regrets but also aims to achieve the pinnacle of martial arts!Compared to cultivation techniques? My lackeys have divine-level technique in hands.Compared to elixirs? My top-tier elixirs are fit only for feeding dogs.Talents? Any genius who encounters me will find their fate crushed!Prosper under my lead, oppose me and meet your demise!

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

Chen Xun crossed into the vast world of cultivation, awakened the Immortal System, and even received an Immortal beast as a companion.Chen Xun walked out of the ordinary small mountain village, stepping into the world of cultivation.Experiencing the prosperous era of cultivation world, the golden age, the era of rule collapse, the dark great turmoil era, and the era when all spirits were silent...Chen Xun, have no interest in fighting or killing, nor do I want to provoke anyone. I just want to travel the world with Bull and see all the splendor of the world.

Crossing to One Piece world, he became Roger’s younger brother.