| Research interval, 2007-2010 | ECC | ECE | Decoupling state | Research interval, 2011-2014 | ECC | ECE | Decoupling state |
| Tianjin | 0.595 | 0.000 | Relative decoupling/ Absolute decoupling | Tianjin | −3.730 | 0.000 | Relative decoupling/ Absolute decoupling |
| Hebei | −0.012 | −124.614 | Absolute decoupling | Hebei | −0.784 | 3.243 | Absolute decoupling/ Absolute hook |
| Liaoning | −0.223 | 0.64 | Absolute decoupling/ Absolute hook | Liaoning | −0.048 | −1.771 | Absolute decoupling |
| Shanghai | −1.463 | 0.000 | Absolute decoupling | Shanghai | −0.219 | 0.000 | Absolute decoupling |
| Jiangsu | −0.016 | 0.000 | Absolute decoupling | Jiangsu | −0.020 | 0.000 | Absolute decoupling |
| Zhejiang | −1.150 | −0.070 | Absolute decoupling | Zhejiang | 0.451 | 0.114 | Relative decoupling |
| Fujian | −0.212 | −1.624 | Absolute decoupling | Fujian | 0.169 | −3.125 | Relative decoupling/ Absolute decoupling |
| Shandong | −0.045 | −20.755 | Absolute decoupling | Shandong | −0.142 | −14.139 | Absolute decoupling |
| Guangdong | −0.122 | −0.599 | Absolute decoupling | Guangdong | 0.101 | 17.090 | Relative decoupling/ Absolute hook |
| Guangxi | −1.402 | −116.533 | Absolute decoupling | Guangxi | −0.041 | 37.966 | Absolute decoupling/ Absolute hook |
| Hainan | 0.094 | 0.000 | Relative decoupling/ Absolute decoupling | Hainan | 0.729 | 0.000 | Relative decoupling/ Absolute decoupling |
| Mean | −0.057 | −0.132 | Absolute decoupling/ Absolute hook | Mean | 0.189 | 5.068 | Relative decoupling/ Absolute hook |