"The bidding is closed."
Does it meaning the bidding process has ended or that the value of each bid is not disclosed to the public?
The 'bidding is closed' means the bidding process has ended.
In a 'sealed-bid auction' bidders place their bid in a sealed envelope and simultaneously hand them to the auctioneer. The envelopes are opened and the individual with the highest bid wins, paying a price equal to the exact amount that he or she bid. These bids are not disclosed to the public prior to the opening of the envelopes.