Lü Yongchang's words clearly startled Cao Liangcai beside him.
"Professor Lü?"
"Are you sure you want the three astronauts to take such a huge risk?"
"Why don't we... have them come back and take our time figuring this out?"
Lü Yongchang stared at the data on the report, his expression shifting.
There was definitely danger.
After all, no one knew what those black rings were.
If they were some highly radioactive substance... even with their spacesuits protecting them, the three astronauts would die on the Moon.
But Xia Country's current situation gave them no time to deliberate!
Lü Yongchang gritted his teeth, resolve flashing in his eyes. Then he gently pressed the radio communication button.
"This is ground control. Please respond if you copy!"
Bai Yixuan stared at the black concentric circles in the crater, an involuntary chill running down his back.
"Do you think these could be traces left by an alien civilization?"
Silence.
There was no response over the team channel.
After a long while, Hong Fan's distinctive, raspy voice came over the radio. "Probably."
"Who knows? That alien civilization might be watching us right now..."
Beside him, Xia Wanyi shuddered and instinctively looked up at the sky.
Pitch-black.
Aside from scattered starlight, she could see nothing unusual.
"Hiss..."
Just as Bai Yixuan was about to speak, a burst of static came over the radio.
"This is ground control. Please respond if you copy!"
Bai Yixuan's expression immediately grew more serious. "Bai Yixuan here. Go ahead!"
After a few seconds' delay, Lü Yongchang's conflicted voice came over the radio. "Captain Bai, after technical analysis, we've largely confirmed that the black concentric-circle pattern in front of you is artificial."
Bai Yixuan's pupils widened slightly, and his breathing quickened. "Then... Professor Lü, is there anything you need us to