The interference in Don't Cry Valley prevented all kinds of equipment from working normally. Zhou Wen wasn't worried about cameras here, but he still needed to pay attention to things like Companion Beasts.
Some people liked to use worms, mosquitoes, and other Companion Beasts for reconnaissance purposes, making them harder to defend against than electronic equipment. This was because few people would notice them so they were especially useful in dimensional zones.
Zhou Wen used the Truth Listener earring to pay attention to every movement around him, to ensure that any dimensional creatures could be discovered the moment they appeared.
Suddenly, Zhou Wen sensed the existence of a dimensional creature. It was a green bamboo viper. It was sprawled on a bamboo joint, sharing the same color as the bamboo leaves, making it difficult for ordinary people to discover its existence.