Recently, three young people from the village had come to find Wang Yao for treatment. They went to the clinic every day. Their illnesses were quite unique. They fell ill at a specific time every day. Their bodies convulsed, and they lost the ability to make any sounds, but they were always conscious.
Wang Yao diagnosed them and found that they were infected with a special toxin. The cause of their illness was very strange. All three of them had gone to the same mountain and returned with symptoms of the disease on the same day. During the start of the illness, the symptoms did not persist for long. As time went by, the length of the symptoms during the fixed time they happened gradually became longer.
"Did you guys touch anything special when you were on the mountain?" Wang Yao was very curious as to how they got infected with this special illness.
"Well, about that…" The three young people hesitated when they heard the question.