I dunno too much about China...but I can tell you about Japan. Im 1/4 English 1/4 Dutch 1/4 Japanese 1/8 Hong Kongian 1/8 Maori.
As you can see tho, I look pretty asian but yea I guess Ive got a pretty big one, I go to Japan quite a bit, and is pretty normal to go to the Traditional Japanese Bathhouses. It is really almost embarrassing for me, because I stand out quite a big with my big flaccid dick and normally Japanese don't stare, but everyone was just staring hard out at me! And then once time, I actually got kicked out of the bathhouse because the attendant saw me and thought I have been playing with myself to get that big and throw me out.
So I guess in Asian countries, if you show your bulge they probably don't register in their head that you just have a big one naturally but think that you have been playing with your dick too much to get a constant erection or something and call you a pervert. I think u get shot for the smallest little petty crime, so I wouldn't risk it if I were you!