Saying this, she patted her chest with a slightly proud expression: "Anything produced by our team is bound to be of the highest quality."

"...Just now you mentioned that you were fortunate to acquire a seed of the World Tree. Might it be this very World Tree?" Xu Xin pointed downward as he spoke.

"Yes." Xu Ying nodded in acknowledgment, "It is this World Tree. It is also one of the key elements of this plan. Hmm... it should now be considered the most crucial point, as this time flow rate has really exceeded expectations."

At this moment, Ji Chaoyang spoke up.

"Xu Ying, I want to ask, are the weapons in your hands... only at the level of a thousand years ago? You... should have weapons with more advanced technology, right?"

This was actually a question Xu Xin had always wanted to ask.

The pinnacle weapons of a thousand years ago, though quite powerful for them, against alien invaders...

A thousand years ago, seventy billion Earthlings, so many powerful nations, were all defeated. What could these people do with these weapons?

Not to mention that the alien invaders have also developed for another thousand years!

Xu Ying remained silent for a few seconds and then said: "The weapons I mentioned earlier, we can rapidly mass-produce. These weapons, in conjunction with the World Tree and Crystal City, are enough to protect ourselves and give us time to develop."

"And there are indeed more advanced weapons, those which our team developed back then by standing on the shoulders of alien invaders, alien technology weapons, but... it’s not the time to bring them out now. You don’t have the capability, nor the sufficient energy and technology, to use and manufacture, let alone mass-produce those weapons."

As she spoke, her expression darkened slightly. 𝕗𝐫𝚎𝗲𝘄𝐞𝕓𝐧𝕠𝘃𝕖𝐥.𝐜𝚘𝚖

Those weapons, all from another time-space dimension, once she handed them over, she could very likely...

...would be of no use to them now either.

Moreover, at the current stage, she still needs to transfer the technology and talents below upwards. If she’s gone, things would be hard to handle.

Honestly speaking, she felt a bit relieved in her heart for having a reason not to hand over that batch of weapons and technology.

She still didn’t want to die.

"So, we need to proceed with the first step. Yingying, do you need to send up the equipment and people from below now?" Xu Xin asked.

"Ah... it doesn’t have to be that urgent." Xu Ying looked out the window, "Time flow here is so fast, there’s... no rush for a day or two, right? We should prioritize development here so that later we can better accommodate what’s needed from below."

Xu Ying’s gaze had a slight evasiveness at this moment, not noticeable unless closely observed, and her arms were folded across her chest.

Hmm...?

Seeing her demeanor now, Xu Xin raised his eyebrows slightly.

This look of hers, he couldn’t be more familiar with.

This was clearly her appearance when she’s lying.

What’s she hiding?

"Is it really safe here? Our survivors still have some concerns about potential issues here." Qi Xuefei suddenly asked.

"Oh, there’s no need to worry about that for now." Xu Ying pointed at the base of the World Tree on the small blackboard, "The root system of the World Tree is incredibly developed, extending thousands of meters underground and can stretch to areas hundreds of kilometers away."

At the same time, she explained the structure of the World Tree:

"The World Tree matures under the energy supply of the crystal energy core, so the strength of the tree body can reach about one-tenth of the crystal’s strength. Don’t underestimate that one-tenth; you all should know the crystal’s strength—despite being just a tenth of the crystal’s strength, it’s almost indestructible."

"Moreover, even if it suffers damage, it’s not a problem. The World Tree can recover by absorbing nutrients and energy from the earth; it not only supplies energy back to the crystal energy core but, even if the tree body is damaged, it can rapidly heal, with a healing speed so fast it’s invisible to the naked eye."

Finally, she concluded: "So, it’s very safe inside the World Tree. At least, back then, I’d never heard of that World Tree being destroyed."