Chapter 1413: Chapter 556 Perfect in Every Way_2 Chapter 1413: Chapter 556 Perfect in Every Way_2 However, Lu Pingping doesn’t plan to tell Yan Fei about the mysterious guest right away. She wants to wait for the right moment when Yan Fei finds the stone tablet buried in the past time-space, and that would be the best time to reveal the truth to him. As long as Yan Fei is forewarned, she believes that the goal of the mysterious guest will not be so easily achieved.

What Lu Pingping doesn’t know is that, when she returned to the present time-space, Yan Fei who had been following her also returned to Dream Island at the same time. The white fog was truly amazing, despite Lu Pingping leaving first and Yan Fei entering last, they both returned to the present time-space at the same moment. However, Yan Fei was quick in his actions, he had just appeared when he saw the stupefied Lu Pingping. After ensuring Lu Pingping was safe, Yan Fei felt relieved. He hadn’t figured out how to face Lu Pingping, so he could only leave temporarily. With Yan Fei’s ghostly speed at that moment, Lu Pingping didn’t even realize that Yan Fei had returned with her.

After experiencing this time-space travel, Yan Fei truly felt the magic of time. His return to the present was just a blink of an eye, but for his past self, it took a whole eight years. While Yan Fei was reflecting on this, the reconnected Auxiliary Brain suddenly sent a message alert: “Drone Upgrade Essential Items discovered!”

Yan Fei was startled at first, then overjoyed. He immediately found an image of a rectangular stone tablet in the Auxiliary Brain. And this rectangular stone tablet was the one he held in his hand, on which Lu Pingping had previously written an eerie “Prophecy Letter” with fresh blood.

Yan Fei looked at the rectangular stone tablet in his hand, surprised that it turned out to be the last essential item for the drone upgrade. Yan Fei had been tirelessly searching for the last essential item for the upgrade; he almost searched the entire Earth but never thought that this item actually existed in the past time-space.

Yan Fei had taken this upgrade essential item away eight years ago and then returned directly to the present time-space. During these eight years, this upgrade essential item was actually located in a chaotic time-space flow, existing neither in the past nor in any of the previous times. Therefore, no matter how hard Yan Fei searched, he couldn’t find the existence of this upgrade essential item.

But when this upgrade essential item was brought to the present by Yan Fei, it was immediately discovered by the Auxiliary Brain and a prompt message was sent to him.

Yan Fei was thrilled, having accidentally found the last essential item for the upgrade. With this last essential item, the drone could be upgraded again, Yan Fei’s strength could be enhanced further, and he might be able to eliminate the hidden mastermind. Once free from the scrutiny of the hidden mastermind, Yan Fei could then be with the person he loves.

However, Yan Fei didn’t immediately store the rectangular stone tablet in the Universal Space. Instead, he took out various equipment and instruments, conducted a detailed scan of the rectangular stone tablet, and performed item modeling in the Auxiliary Brain, fully replicating the stone tablet’s appearance. He then filmed the text written in blood on the tablet, ensuring every character, every pattern was captured exactly as is, without any deviation.

This stone tablet was specifically left for Yan Fei by Lu Pingping. Although Yan Fei needed this stone tablet for an upgrade, he would not completely destroy it. He planned to perfectly copy all features of the stone tablet and then forge an identical stone tablet to replace it, returning the original to Lu Pingping once the hidden mastermind was eliminated.

Once all the features of the stone tablet were fully documented, Yan Fei then stored the rectangular stone tablet in the Universal Space. He then noticed that the Upgrade Essential Items data displayed in the Auxiliary Brain had changed, from 9/10 to 10/10, achieving perfect completeness.

The drone had already met the other conditions for upgrading, namely reaching one million Merit Points. Now that the number of Upgrade Essential Items also met the upgrade requirements, the drone satisfied the basic conditions for an upgrade. Then Yan Fei noticed that the display panel changed, the previous conditions for drone upgrades disappeared, and the long-awaited upgrade button appeared.

However, the upgrade button was greyed out, indicating that the upgrade operation couldn’t be performed yet. But next to the upgrade button, a red question mark appeared. Attaching his thoughts to the red question mark, Yan Fei discovered hidden text within it.

“In Earth, no upgrade template samples were found suitable for use. Please provide a specific upgrade template sample. Alternatively, design an upgrade template sample, and as long as the upgrade template sample passes technological verification, it can be used as a sample for the upgrade!”

When Yan Fei saw this hidden text, he felt an “I knew it” sensation. He had felt before that if the drone could be upgraded again, it would definitely achieve a comprehensive enhancement in combat power, becoming invincible on Earth and overpowering everything. But now, it seemed impossible for any combat aircraft on Earth to meet this standard.

Thus, Yan Fei either had to leave Earth to find higher technology space battleships in the universe to serve as the drone’s upgrade template, or he had to design a space battleship himself to use as the upgrade template. Otherwise, the drone could never be upgraded again.

With the technological strength Yan Fei currently possessed, he was still unable to produce a spacecraft capable of interstellar travel, so he couldn’t leave Earth and truly enter the cosmic starry sky. Even if he risked entering ]); the cosmic starry sky, finding a high-tech space battleship was not guaranteed.