I have analysed the PRC mentality and come to the conclusion that they behave in whatever way they feel benefits them the most, regardless of the impact on others. This mentality is not wrong but it should not be applied in public spaces where you need to balance the rights of others who may be offended or adversely affected by your behaviour. The biggest problem, I think, is their lack of empathy for others, leading to such inconsiderate behaviour. SGreans are only slightly better in this regard and that is only after years of conditioning through the imposition of fines and punishment.