MTL - I Have a “System” Halo - Chapter 21 I have a "vanity" halo

He was an orphan with mediocre aptitude and a humble background.Through perseverance and an unwillingness to settle for mediocrity, he practiced cultivation desperately.By a stroke of luck, he awakened the Ancient Martial Soul, long extinct in this world, and from that moment on, his rise was unstoppable, like a comet soaring high, embarking on a cultivation journey to dominate the world.Starting as a beggar who was bullied by others, he began to shine with each step, entering into an era of chaos where Sects are numerous, talents abound, the Ten Thousand Clans vie for power, and human heroes emerge one after another in a vast and magnificent world.With the 'Tyrant Sky Martial Soul', he vowed to forge his own myth!

In her previous life, Gu Ying gave up her dignity as the legitimate daughter of the Duke of Dongping’s manor for Jiang Yin. She pestered him relentlessly until she finally married him.

Later, Jiang Yin rose to great power and status. He schemed against the state first, then killed her father and exterminated her clan.

She was betrayed by her scumbag husband and sister-in-law. They broke her legs and threw her in a dilapidated temple, subjecting her to all kinds of humiliations for ten long years.

After being reborn, Gu Ying returned, ready to take revenge.

The first step was to cling onto the “fiancé, Young Marquis Yong’an”, kick away the scumbag, fight the scumbag sister-in-law, and play the prestigious families of Bianjing for fools!

The second step of revenge was to cancel the engagement with the “fiancé” and flee to the borderlands, taking her younger brother to find their father!

The third step of revenge was to find a meek, submissive man to marry, staying far away from the scumbag husband, and live a happy life!

Yet she never expected that the leg she clung onto by accident did not belong to the Young Marquis, but the legendary, sinister and ruthless Crown Prince Zhao Changdu!

Everyone said the Little Prince was hard to handle. This time she would certainly lose her life.

Yet unexpectedly, she could not only handle the Little Prince, but also arrogantly ride on top of him. “Husband, you have cultivated excellent masculine virtues, your wife cannot run away!”

The subordinate was shocked: “Little Prince, you stay up all night reading, you wouldn’t be looking through the Dongli Punishment Illustrations Manual to torture your wife, would you?”

Zhao Changdu remained expressionless: “Thank you for your concern, but this Crown Prince is cultivating masculine virtues to please his wife.”

On her wedding day, she was humiliated; her status as the legitimate wife was instantly changed into that of a concubine.

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?