MTL - Eternal Life - Chapter 1406 Encounter an old person

Xin Xiu exclaimed, “Master is a panda!”

In an exhilarating twist of fate, Jiang Chen traverse into a fantasy realm novel he read, taking on the role of the notorious Holy Son in a riveting tale. But here’s the catch – he’s pegged as the female lead’s obedient doglicker. Or so the story initially wanted…Unleashing the ‘Slack Off System’, Jiang Chen flips the script! Each act of slacking off spectacularly rewards him. Doglicking duties? Jiang Chen smirks at the thought. “Not in a million realms,” he declares.As the system chimes melodically, rewards rain down like immortal gifts:Ding, for successfully slacking off, you receive: the Emperor Weapon, All-Heaven Mirror!’Ding, another round of slacking off earns you: the Immortal Technique, Great Daluo Heaven!’Ding, for successfully slacking off you received: Immortal Emperor Cultivation!’But wait, there’s a twist in the tale! The world around Jiang Chen starts to unravel in the most unexpected ways.The character settings of the female leads have all collapsed.Junior Sister Ye Qingcheng: ‘I can only repay your life-saving grace with my body!’Cold and aloof master: ‘Disciple, I allow you to defy your master.’

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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What will you do if you were transmigrated into the novel you were reading.Alex, an ordinary boy was faced with this reality as he was transmigrated into the novel he was reading. But there was a surprise there as he was not the main character or even one of the side character. He was an extra.*Ding[*Welcome to ARCANIA][Successor of the Apex]He became the successor of the strongest being in the world and was given a chance to live a whole different life than his past and he gladly accepted it as his past life was anything but good.But will his life be like those extra's who became cannon fodder or would it be whole different life ?Could he became powerful enough for a threat bigger than demons?****1-There no harem in the novel.2- Our mc is overpowered and there will be no hiding of strength at least to some extent.3 I am new at writing so please if I make mistakes do tell me.