Gu Chengyu saw that Jiang Yazi was unwilling to reveal the master of the house, so he didn't ask further. These brokers often deal with large households, so they naturally have to keep their mouths shut. Otherwise, who would do business with them?
However, from what he said, Gu Chengyu understood. The hot spring manor surely wouldn't worry about being unsold; an aristocratic family buying two manors obviously can afford it.
But it seems that the master of the house doesn't want acquaintances to know about it and dares not publicize even if they intend to sell, which is why it's cheaper for Gu Chengyu. After all, being able to come up with nearly twenty thousand taels at once is not something ordinary people can do.
"In that case, I am indeed to give you seven hundred taels of silver. I keep my word and never go back on it; let's go to the government office to handle the red contract." The red contract must have Gu Chengyu's signature and fingerprint, so he certainly has to attend.