Well now that I'm done trolling I'll give some genuine advice.
Asian girls may seem more introverted and unapproachable, they may even ACT more unnapproachable but this is just because you lack the charisma to bring that more adventurous side of their personality to the surface. It is true that asian cultures in general tend to be more strict and conservative, the thing is though that a person's culture always come second to their innate desires as a mammal. For example, there are practicing gay people in Saudi Arabia who have gay sex despite the fact that it is a capital crime over there and harshly condemned in islamic culture. The innate sexual urges of these gay guys are so strong that they override the abomnible homophobia of the surrounding cultural environment. The same happens when you approach an asian girl and you get her genuinely sexually attracted to you.
One of these Korean girls was like FOB with limmited english and a heavy accent but I still managed to makeout with her within 30 seconds of meeting her because no matter what her cultural background she is first and formost a human being, a primate with primal sex urges. Language barriers are IRRELEVENT, cultural differences are also IRRELEVENT. These two things are logical, processed in the cortex, sexual attraction and romantic love are emotional, processed in the Limbic system and surrounding deeper brain structures.