Question about Zhu Hong's dream (ep 31)

[china_shop]

( Two more pics. )

In Zhu Hong's dream (episode 31), Zhao Yunlan seems younger, with less of the aggressively "bad boy" persona he adopts early in canon. He wears a button-down denim shirt untucked and rolled up at the sleeves. His trousers are short enough that they leave an inch or two of bare ankle.

Also, for some reason, Zhu Hong is out doing fieldwork in a dress and high heels. They chase someone (notably, not in a black hoodie), who attacks and then runs off. Then they bicker about Zhu Hong's shoes, and she tells him to head back to the SID first. Which he does, even though their suspect could still be lurking around.

My question: do you think this actually happened? Is this how Zhao Yunlan dressed a couple of years ago? Did Zhu Hong do fieldwork? Or is it a composite fantasy made by the Nightmare Master out of Zhu Hong's various memories -- an action-scene excuse for Zhao Yunlan to hold Zhu Hong and protect her?