What are the similarities and differences between online auction and real auction, and how to avoid risks as an auctioneer?

At present, many people in China think that online auction only takes the network as the medium, but changes the carrier of auction activities, at least in essence, it has the characteristics of traditional auction, so online auction should belong to auction, and auction law can or should be applied. But the fact is: there are great differences between the two in terms of auction targets, auction parties and auction procedures. The transaction mode of online auction adopts the price competition mechanism of bidding: in online auction, the seller logs in the goods on the trading platform provided by the network service provider (referring to the technology platform provider or network company), and before the deadline of bidding (bidding), the buyer bids on the items he is interested in by submitting the price online (the price that the buyer is willing to pay). There are two main forms of this price competition mechanism, that is, forward bidding and reverse bidding, and there are two main trading modes: online British auction and online dutch auction, as well as other trading modes, such as collective bargaining (collective purchase), bargain-hunting and anti-auction (bid-seeking). Some websites may have several trading modes at the same time.