China is more unique in the sense of 1 child policy then 2 child policy and now 3 child policy
when u are the only child, u get spoiled by ur parents and ur parents will want the best for u even in choosing the right partner
both parent and child expectations become great compared to the norm.
furthermore Chinese or asians want to lead a good life with less worries after tasting a stable and prosperous life compared to previous generation where there was war and scarcity of food during the 1900s
after world war 2, asia had the Korean War, Vietnam war which brought hardships and asia countries were not economically strong as western countries in recovering and growing from post world war 2.
south East asia was very much poor and was the backwaters of asia
so getting married is expensive and also costly to raise a child, so why they want to reduce their current quality of life?
just my opinion