Big cities in China are not exactly bird friendly. However, I found this lovely park in Guangzhou by the name of Da Foo Chan. Lots of people at all times but enough nature for little birds to find space. I was there in early April when this wonderfully adorned FC passed through from its wintering grounds on Borneo and the Philippines towards its breeding grounds in NE China/Japan.
All in all I saw 4 birds, all male. That yellow eye brow make a good detail separating if from Yellow-rumped FC, a much more common bird in Thailand.
Narcissus is only vagrant in Thailand.