Yan Hui remembered that the Wilderness Survival Handbook had said the fastest way to send a message was light.
Whether they were surveying terrain, minerals, and landforms in all kinds of environments, or observing meteorological changes from high altitude, field personnel who needed emergency help would use the Rose Weapon "Black Magic" to fire Light Element rounds into the sky.
The Light Elements would explode in the air, creating clear, firework-like trails of bright light, like layer after layer of halos.
Following that line of thought, Yan Hui projected a long-range signal into the High-Frequency Zone, amplifying the bright light and signals generated by some of the Electric Vibration Star collisions, thereby creating the Yao Clan's universal distress ripples on the Observatory's mirror surface.
It sounded somewhat complicated, but now that Yan Hui had become half an Electric Vibration Star, using signals was as easy as picking up a small knife with his hand.
Sonic was the first to notice its meaning.
Blood Elves were natural blood doctors, and they were exceptionally sensitive to cries for help.
He first looked left and right, then gazed up at the sky. "Yan Hui? Is that you? It's you, right?"
It's me. I'm in the Light Zone.
The Blood Elf froze for two seconds, then excitedly clenched both fists. "You're not dead! You brat! What exactly happened? I remember you were perfectly fine that day when we came out of the Polycystic Complex, then when I turned around, you were gone. Lord Blood Knight took everyone and turned the Survey Station upside down, but we didn't find anything..."
After Yan Hui sent a few lines of text, he discovered that light could indeed transmit information stably and safely, but its efficiency was very low.
So he began considering a more efficient method to