"But even more, I love that finding out the Envoy's secret identity/situation (not only living in Haixing pretending to be a regular Haixingren, but also apparently having a ~thing~ going on with Zhao Yunlan) in no way affects Chu Shuzhi's absolute loyalty, respect and commitment to the Envoy."

AW, I didn't even think of the implication that the Zhao Yunlan thing is totally fine too. :D

"(I don't think Chu Shuzhi is consciously thinking about this, but making a well-connected young Haixingren bow to the Ambassador of Dixing must be so satisfying on some level, given how badly Haixing treats Dixingren generally.)"

Another thing I didn't think of (and yeah, he probably didn't either :D), but this is such a good point!