Commercial Building Big Differences among Similar Buildings 160 120 80 $ 40 0 12345678910111213141516 hotel Source:Tsinghua Tongfang Human Environment Engineering CompanyCommercial Building Big Differences among Similar Buildings 0 40 80 120 160 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 hotel e n erg y c o n s u m ptio n in d e x (Y u a n/m 2 ) ﹩ ＄ Source: Tsinghua Tongfang Human Environment Engineering Company