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At the very bottom of the building, there was a restricted area belonging to the Stark family. Even Tony had only been there twice. It seemed that painful memories were hidden here, leaving Tony unable to bear the thought… As they walked on, they reached an ancient room. Tony looked at the door and what came into view was a silver-gray spaceship. Its design was streamlined and its appearance was rather ordinary.,Chapter 2: The Mysterious Ancient Sword and the Dragon's Heart Flame,Iron Man suddenly chuckled dryly, speaking to himself: "My father participated in the rebirth plan back then, keeping a tube of the most original super serum. I don't know what side effects it has. I've always kept it as a treasured relic from him, dear Guan..." Tony's face instantly darkened, revealing a sinister smile, "For world peace, for enhancing your abilities, I'll have to burden you a little! Thor, hold him tight! I'm going to get started!"。

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