They can be almost as loud as their Western counterparts, and it's easy for them to open up more when they drink.
Once you get to know these Asian dudes, you'd be surprised as their personality when they're comfortable with a person is lightyears away from your first impression of them. But don't be fooled by how shy these Asian men are because it's normal for them not to go all out when it's only the first time that you'll meet them. The culture in Asian countries is vastly different than how it is in the west. Whenever you meet an Asian guy, the first impression that you'll get is that he is shy and reserved.