Fortunately for Shen Wei, Zhao Yunlan 1) likes to sprawl, and 2) likes to flirt by batting his eyelashes at his target from a lower angle so his secret is safe! Until one day, maybe they’re really in a hurry after a case and when Shen Wei morphs back into his civilian guise (or maybe he’s making his heipao outfit disappear for reasons *g*) and he forgets about the hair.
Hm, indeed! But Zhao Yunlan is also taller than the Envoy, so if one day he greets the Envoy while he's standing on a rock and the Envoy is significantly lower to him... Thwoop! Or maybe the hairstyle is to anchor the hood in place so it doesn't slip, even when it's windy?