Yunhai City, Supernatural Research Institute.
The first solution that came to everyone's mind was the famous Morse Code!
By using short dot signals "." and long signals "-" held for a certain duration, they could transmit information.
But the moment they sent the first command, the screen turned blue.
The other party had disconnected. Would they like to initiate another communication request?
The meeting room erupted in uproar.
"H-He shut off the communication video?!"
"Reconnect!"
Please wait... Initiating contact with Meida Civilization...
Yet after trying to connect for ages, the screen still did not light up again. The other party's communicator really was not much good.
Professor Zhang Hui, the institute's chief director, slapped his forehead hard, feeling that his good intentions had backfired.
They had originally wanted to use vibrations and alarms to let Lu Yuan know: You've connected with humanity! You're not fighting alone!
But on second thought, the other party probably did not understand Morse Code, so sending it would have been pointless. Furthermore, time passed differently for both sides. One second in the Safe Zone was equivalent to one hundred seconds for Lu Yuan.
The vibration signal frequency was also limited. It could only be triggered once every second or two.
That meant that after a long while, Lu Yuan had only received one vibration. Was it any wonder he had been confused and shut off the device?
Wiping the cold sweat from his forehead, Professor Zhang Hui swallowed and took a deep breath. "The good news is that the alarm vibration channel on that machine is fully functional. It can receive our signals and trigger vibrations..."
"The bad news is that the alarm channel can transmit too little information, causing Lu Yuan to misunderstand us completely."
"Can we keep sending alarms?"
"No. The other party