Before Ning Cheng went to the auction, he specifically inquired about the exchange ratio between Yong Wang Dan and Zi Coin. When he knew that theoretically 10,000 purple coins could be exchanged for one Everlasting Pill, but in reality it was difficult to exchange for the Everlasting Pill, he knew that his one billion purple coins were completely a fraction of what the other party had thrown out, and the other party didn't have them at all. Fancy it....