1) Annie sometimes brought me to travel on the mrt. The crowd in Guangzhou mrt is most probably worse than that In Singapore. On 1 mrt ride, where it's pretty crowded, I saw people trying to squeeze onto the train. They will be calling out to people inside to squeeze in more so that there's space for them to come in, and people in the grain generally comply. And they they can't squeeze any more, they'll say it out loud, and the person trying to come in will stop trying.
I can imagine a similar situation in Sg. where we won't call out to people in the train to squeeze, we'll just try to push our way in. And when it's too tight to squeeze, we probably won't tay it out loud. We'll be cursing under our breadth at the person, or shout at the person rudely.
China seems more civil than us for this. Of course, this could be my experience alone.
2) Annie brought me to KTV with her friends. One of them selected a few national songs. I can't imagine any of my friends choosing such songs. And if someone really did so, that person will be looked at with dread. But Annie and her friends just join in to sing the song happily.