After losing its satellite navigation capabilities, the Kingdom of Rothil has been looking for an alternative to this kind of thing, until the current Loland Empire.

It was only after the launch of the first launch vehicle that put an experimental navigation satellite into low Earth orbit that the Loran Empire discovered that its technology was far from that of the Eshur civilization that Viroya used.

The cost of using self-produced satellite navigation is too high, and there is also an obvious problem that the supporting transmission equipment also needs to invest a lot of resources to build.

That would be better if you were to use the original alchemy navigation and the new habitual ......

"The Abyss of Black Water" Chapter 5 The manned space program is in the middle of the fight, please wait a moment,

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