MTL - Rebirth 2011 - Chapter 631 who is my opponent

The protagonist Yang Yong competes with others in the bar and has a special function of mutation, and he can observe the spectrum emitted by various metals.

Every day in the United States, there are thousands of unowned abandoned warehouses for auction. Yang Yongping borrowed the special function of his left eye to find valuable items from the garbage, such as gold and silver coins, cars, and even antiques, guns, There are all kinds of things.

The scouring has made Yang Yong’s business bigger and bigger, from auctioning old warehouses to auctioning old houses, buying salvage boats to salvage sunken treasures on the seabed, to buying ancient castles in Europe and excavating underground vaults, step by step. Kangzhuang Avenue, proud of life.

- Description from novelbuddy

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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After graduating, Su Jing was met with rejection everywhere he went. Discouraged, he returned home to adjust his mood. He then discovered that his own backyard had become the Galactic Garbage Station. Every day, lots of tr*sh would suddenly appear – some were from Tomb of God, Battle Through the Heavens, Coiling Dragon, One Piece, Naruto, Bleach, X-Men, Captain America, Iron Man, and even from the Marvel Universe. As the owner of the garbage station, Su Jing had the duty to process all these tr*sh. In the beginning, he thought it would be a hard and unprofitable task. Afterwards, he discovered that this was actually the most beautiful and cushy job of his entire life.

To rise from defeat; to revive amidst the dissipation.