Status and changes of the subjective and the objective indexes can be explained by their respective subindexes - living standard，living costs，human capital，social security and living experience （health conditions）.

3.1 Living Standard Index

The living standard index consists of a subjective index and an objective index （social and economic data index）. The former was obtained through a telephone survey on income status and income expectation by assigning values to survey answers，and the latter by calculating the social and economic indicators of the 35 cities，including two primary indicators （income level and life improvement） and their subordinate six secondary indicators.

3.1.1 Subjective indexes of living standard

Table 1 lists the 2017 living standard subjective indexes of the 35 cities.

Table1 Living Standard Subjective Indexes of the 35 Cities （2017）

As can be seen from Table 1，the 2017 national weighted average of the living standard subjective indexes is 61.34，which is over 50–the critical point between the satisfaction and the dissatisfaction intervals. Among them，25 out of the 35 cities score over 60，but there is still a long way to go to reach the “very satisfied” interval （76-100）. In 2012-2017，the national weighted averages of living standard subjective indexes are 51.28，52.51，54.32，60.07，60.44 and 61.34 respectively–all above the satisfaction level and generally going upward.

Regionally speaking，in the list of living standard subjective indexes，there are 4 eastern cities–Beijing （69.63），Shanghai （64.88），Qingdao （64.43） and Tianjin （62.41），1 central city–Changsha （62.96），and 5 western cities–Urumqi （67.53），Guiyang （66.09），Xining （63.87），Chengdu （62.9