Share price - General Discussion, page-1357

This was at the match out in the close of trade auction.
I am unsure if China understands the mechanism used for this.
Very basically, if you want to get at the front of the queue in the match out and ensure you fill your order (whether it be a buy or a sell) you need to offer below the match out price or bid above it. You are not guaranteed in getting your order filled if you bid the exact price as there may be others in front of you at that price.
Whoever offered their shares at 1.56 didn't expect to sell them for that. Nor were they trying to keep the price down. They were just ensuring that their order got filled at whatever price the matching happened in the auction. Similarly, the bidder at 1.66 didn't expect to pay that much but wanted to ensure his/her order was filled at whatever price the auction settled at.
I am sure there are many other explanations of the mechanism available online but here is one of them
https://rivkin.com.au/members/resources/all/understanding-the-asx-opening-and-closing-auctions

China, I love your research, knowledge and posts with respect to this company, as do many other holders of this stock.
Hope the above explanation assists in understanding the low offers/high bids at opening and closing auction times.