Yeah, me too, Canh! Love the smell when it's all over everywhere,
it provides me such a warm fragrant wonderful winter time.
Love your orchids' pictures too, I'll definitely go look around later on your nice collection after a stunning first impression on your Christensonia vietnamica, it was SO beautiful, and truly magnificent ^_^.
I've been to Hanoi to my good Vietnamese friend's wedding but never seen orchids like yours, I've also visit the orchid garden on Sapa mountain town during the sightseeing walk, but when I was there, there was not that much bloom (most of them are Cymbidiums, I'm not really sure..., I'm now trying to find those Sapa pics in my folders but don't see any orchids, maybe there was no bloom so I didn't take any orchid pictures.