Really it comes down to the US bitching about the Chinese manipulating their currency. They have been the biggest buyer of US bonds but I don't think they have been coming to the auctions since US has started complaining. Depending on the outcome of the US wanting them to reevaulate; they might...
Was 300+. Part of it got taken out. I wouldnt trade around big bids or ask. Sometimes they are there just to flush the weak hands. Its common also to see 1000-2000 trades happen on every penny
there were stops at 8058 that were ran, after those were run there was buying again at 8030-40. These big buys will hold till eod or be stopped out. If stopped out there will be buying at 8010-20