1. Could you figure out what it is if you hear the
from the internet: [COLOR=RoyalBlue"]Bid Rigging: The unlawful practice whereby two or more people agree not to bid against one another so as to deflate value".[/COLOR].
I guess it means that there is some stuff going on "under the table" in order to win the bid and it's considered illegal.
As for your other questions about dango, I have no clue and little time to read the whole thing. Sorry.