The second highest bidder receives nothing but pays the amount of the losingbid. that's great.
出价最高者获得第二，但没有支付的损失出价金额。
2
The owner shall, within 7 days of notification to all losing bidders of the bidding results, return all bid documents that have not been chosen to the bidders.
招标人应当在中标结果通知所有未中标人后7日内，将未中标的投标文件全部退还给投标人。
3
Since they have only one chance to bid, fear of losing the item induces overbidding.