Yan Yu and Chen Lingyun returned to the training ground, only to see three girls facing each other, silent, with just their lips faintly moving and the hands behind their backs constantly changing.
Clearly, they were playing rock-paper-scissors using their Divine Sense!
Unlike light, which can only travel in a straight path, Divine Sense could scan what shape each person was making behind their back. Sound Transmission Technique was a point-to-point communication method, which allowed one to silently send messages directly to the target by locking onto them with Divine Sense.
"What are you guys talking about?" Chen Lingyun tried to join the group chat, sending a private Sound Transmission to the three of them.
"We're saying that as long as we use the Sound Transmission Technique, the captain won't be able to hear us," Lin Ning quickly replied.