Chapter 655: Upgrade Raw Materials_2

Yan Fei already sensed the danger. To tackle the imminent crisis, he must complete the Drone Upgrade, no matter the cost. However, even if he spends everything he has, he won't be able to gather enough Raw Materials on Earth. What should he do?

Yan Fei stood outside in a daze for a moment, then re-entered the Dreamland Cave World, returning to Yang Qi's laboratory to consult with him. Yang Qi, knowledgeable in astronomy and geography, might just know how to solve the problem Yan Fei was facing.

Yang Qi originally watched Yan Fei leave the Dreamland Cave World happily, but to his surprise, he saw Yan Fei returning with a face full of frustration. He asked, "Yan Fei, is there anything else?"

After a bit of deliberation, Yan Fei said, "If I want to obtain 100 million tons of gold, 1 billion tons of silver, 10 trillion tons of iron, 1 trillion tons of copper, and 5 trillion tons of nickel, do you have any good ideas?"