回复19楼:"A Chinese Big Mac cost 25 yuan in December 2023, whereas the American version came to $5.69. Divide one by the other and the Big Mac index gives a dollar-to-yuan exchange rate of 4.39. That compares with a nominal exchange rate of 7.20 yuan per dollar" 来自互联网。个人认为利用BIG MAC INDEX 是比较正确的方法。国内5G网络费用,餐费,交通费相比北美都非常便宜。如果中国年薪12万,只有不在一线城市生活,还是可以过得不错的。我老家江苏海门县就是例证。