According to Mr. Toad himself, he has been living in the Hidden Stream residence for over three thousand years, becoming a Big Toad with profound cultivation. He is not like those little monsters without experience that are easy to fool. Toad venom is of little value to him, so it's fine for other Pill Masters to trade for it with poisonous insects he likes to eat. However, Lifebound Essence Blood is far too precious compared to toad venom, and Ning Xiaoxian wants as much as twenty drops, which is tantamount to him giving up a whole year's cultivation. Therefore, Mr. Toad pondered for two days before proposing his terms for the exchange.
As for what Ning Xiaoxian is going to do with his essence blood, what does that have to do with Lord Toad? Pill Masters are all a bunch of odd people; having guarded the door here for thousands of years, isn't he familiar enough with them by now?
