The method of making venomous snakes was naturally different from making magic tools. Making magic tools required fire, but one could not use fire to make venomous snakes, unless one wanted to make snake kebabs. In fact, it was very simple to make a venomous snake. You just had to feed it a poisonous substance, and then use your spiritual energy to slowly help the venomous snake digest and absorb the poison. This way, the venomous snake would become even more venomous.
Of course, you could also feed the poisonous snake with the refined poison, but in that case, the poisonous snake might not be able to withstand the medicinal power and be poisoned to death.
