What is this mutual flattery in business? It's the standard template. The parties don't need to be very well acquainted, just pick some nice words to say. The truth of the matter isn't important; after all, we're not in the same trade. Even if we get it wrong, there's no harm in it.
Mr. Zhang finished this sentence, and the three looked at each other and burst into hearty laughter, the atmosphere becoming very merry.
"Um..." But a few seconds later, Mr. Zhang still slightly lowered the tone of his voice and added, "However... there is still something Zhang must remind the two gentlemen about."
What Mr. Zhang was going to remind them about was naturally just the issue of "allowing an outsider to pose as an imperial official to judge a criminal," which must not be spread far and wide.