Not only oil, but also coal is an inefficient energy source that has been discarded, and there are many technologies to improve efficiency that can be purchased very cheaply.

Ji Meiru immediately started to purchase technology, otherwise it would be a waste to bury it in the ground, and it was the best way to earn star coins.

She also found a business opportunity, which turned out to be table salt, which many civilizations within the human race would purchase in a big way.

This thing has the most value in the earth's stars, and it is also a food ......

"I Have a Stunning Female God of War at Home" Chapter 443 Protection Period is in the middle of the hand, please wait a while,

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