Regarding auction, what is dutch auction and what is dollar auction?

Dutch auction is a multi-piece auction. The rules are as follows: the highest bidder gets the treasure first, the same bidder gets the treasure first, and the transaction price is the lowest successful bid amount. You need to bid on the baby page and enter the price you are willing to bear and the quantity you need. All the successful bidders pay the same price for each treasure, that is, the amount of the lowest successful bid. This amount may be lower than your bid, the highest bidder will get the specified number of treasures first, and the final winner can refuse to buy the treasures that do not reach the specified number.

A one-dollar auction is a one-dollar auction. If you shoot alone, no one else can increase the price, but depending on the freight, many people use high freight to bluff.