Kong Wu suddenly awoke from his deep sleep and looked at Zhang Ruijie with vigilance:
"Brother Jie, did you just hear something?"
Ye Qing also opened his eyes, "It sounded like a starting gun." After speaking, he got up and walked quickly outside.
Once the signal flare is launched, it descends slowly, pulled by a parachute.
By the time he walked over, the light of the signal flare had dimmed, but it was still faintly visible.
"It's a signal flare." After saying that, he turned around, his eyes probing, looking at Zhang Ruijie, "In the middle of the night, what's the meaning of launching a signal flare?"
The signal flare can transmit up to about 33 kilometers, and based on the distance between Yaoben Base and the Observatory, it should exceed that distance.
Of course, it's possible that he wasn't signaling to Yaoben Base.
However, if there are relay points set up in between, then there is no problem with the signal transmission.