The China Institute of City Competitiveness, a Hong Kong-based research organization, has released a ranking of Chinese cities based on their clean index.

Liuzhou, Guangxin Province

The ranking uses 21 detailed indexes in five major criteria, including a green index, a clean and tidy index of buildings, a clean index of living environment, a waste disposal index and a sanitary service index.

Hong Kong has become the cleanest city in China, with a total score of 89.3. Macao and Xiamen of Fujian Province rank the second and third respectively.

Let's take a look at the top 10 cleanest cities in China.

#10 Jincheng, Shanxi Province

Total score: 79.31

#9 Heyuan, Guangdong Province

Total score: 79.94

#8 Yangzhou, Jiangsu Province

Total score: 80.64

#7 Shaoxing, Zhejiang Province

Total score: 81.68

#6 Binzhou, Shandong Province

Total score: 82.49

#5 Liuzhou, Guangxi Province

Total score: 83.72

#4 Dalian, Liaoning Province

Total score: 85.13

#3 Xiamen, Fujian Province

Total score: 85.96

#2 Macao

Total score: 87.99

#1 Hong Kong

Total score: 89.3

Source: china.org.cn