Table 4.

Variables and their interpretation.

Variables	Variable explanation	Unit
Service capacity (se)	Transportation, storage, postal industry	Million yuan
Human Capital (ca)	No. of students enrolled in ordinary higher education institutions	People
Government Support (gov)	General fiscal public budget expenditure	Million yuan
Resident consumption level (con)	Per capita disposable income of urban residents	Yuan
Industrial Base (in)	Value-added of tertiary industry output	Billion
Market supply (ma)	Fixed assets investment amount	Million yuan