C689 Benefit exchange

Old Viper nodded. "Don't you believe me?"

"Of course I believe you, but how often do you say you can't register frequently?"

"About one injection a month. One injection this month, and another one after thirty days. This way, it won't damage the brain and damage the body, because the poison will be discharged after a month of adaptation." Viper said.

Even if he didn't annotate it frequently