Find a novel from another world

I don't remember the name of the novel, but I vaguely remember some fragments. I hope that someone who likes reading novels can help me think of the name of this novel.
As soon as the main character appeared, he grabbed a saint white tiger as his mount. He was dressed in black and carried a large sword on his back. After helping a convoy through a crisis, he got into a car and went to the city. This was also the scene when he first appeared. Later, he became a teacher in a magic academy. He taught a special class. The people in this class were very stubborn and not very talented. Then, the protagonist made them run circles in the gravity array to increase their physical strength. Later on, he also developed many high-tech weapons and let his students join his organization to form a team that specialized in using modern weapons. If I remember correctly, there was something about aliens attacking the planet…
In his previous life, the main character was a pervert in the cultivation world before he transmigrated. He spent a very short time to reach the Dacheng stage. At the same time, he liked to study many strange things. He transmigrated because of a strange stone. When he was studying it, something happened to the stone, and it brought him to a different world.
If I haven't reminded anyone of it after saying so much, I can only say that the content of the novel isn't attractive…
I remember that the main character's hand was called Ming. En, it's two similar words.
In short, there were a few points:
1. He had caught a saint white tiger as his mount as soon as he appeared. He was dressed in black and carried a large sword on his back.
(2) He was a teacher in a magic academy. He taught a special class. The people in this class were very stubborn and not very talented.
The first step of training was to run circles in the gravity array to increase physical strength. He also raised the theory of long and short boards and the theory of water tanks.
Later on, he developed many high-tech weapons and allowed students to join his organization, forming a team that specialized in using modern weapons.
He had even become the national master of a country, a super national master! Against all the forces on the continent!

Answer 1

I'm not a real novel reader, but I can recommend some otherworldly novels that might meet your requirements.

" Battle Through the Heavens " and " The Peak of Martial Refinement " were relatively well-known novels written by Heavenly Silkworm Potato and Momo respectively. These two books told the story of the protagonist's cultivation, battle, and growth in the Otherworld. " Battle Through the Heavens " told the story of a young man's growth. He experienced various challenges and battles in a different world and finally became a powerful martial artist. " The Peak of Martial Refinement " focused more on the protagonist's cultivation and growth. It told the story of the protagonist overcoming difficulties on the path of cultivation and constantly improving himself.

There were also some other novels that could be considered, such as Douluo Continent, Covering the Sky, and The Evil Prince. These novels all had different styles and characteristics, and they could be chosen according to one's preferences.