"This is called an 'Echo Device'. As long as you don't exceed 100 kilometers, you can maintain contact smoothly. Beyond that distance, the signal will progressively weaken until it becomes ineffective after 200 kilometers. So take it easy and don't stray too far from the Oasis; just stay active in the nearby area. Also, in case of catastrophic weather, the Echo Stone might also become ineffective, remember that."
Six essential items, each extremely critical.
Lu Chenzhou put on the bracelet under his advanced protective suit.
He thought of something and asked, "Is there electricity at the base?"
Shentu Youshan replied, "There is basic electricity, and quite a few human technologies still work in there. It's just that for the time being, we can't solve the issue with wireless communication satellites and the like. Telegraphs and such are usable at the Oasis base and the nearby areas."
