Please look carefully at the original article. the MEDIAN net worth is used not
the AVERAGE as you referred. To calculate the median wealth one have to sort
everybody's net worth from low to high then pick middle one and disregard all others. In that way the MEDIAN # is exactly sits on the center. There are half people poorer than this number while there are half people are richer, a meaningful # describes the wealth of middle class.
For the house I think the equity of the house will be counted, That is the
portion of the house market worth minus the bank owned part, i.e. the pert of house belong to the house owner. Average house is $200K in US. $40K (20%) down
pay and $160K mortgage. after several years the owner may paid another $10K to
#20K into the house on top of the interest paid to the bank. so that the middle
class disposable money is about $20K (2 wan US yuan) = $80K - $40K - $20K. very
poor.