Lhasa, capital of southwest China's Tibet Autonomous Region, led China's 2016 Happiest Cities list, according to big data analysis and a survey polling more than 100,000 families conducted by China Central Television (CCTV).

Last year, China's top 10 cities are as follows:

1.Lhasa, Tibet Autonomous Region

2.Chengdu, Sichuan province

3.Changchun, Jilin province

4.Yinchuan, Ningxia Hui Autonomous Region

5.Tianjin, Municipality

6.Hefei, Anhui Province

7.Changsha, Hunan province

8.Wuhan, Hubei province

9.Haikou, Hainan province

10.Shijiazhuang, Hebei province

The cities were ranked based on several indicators, including family, marriage or emotional life, health conditions, social security, income, environment, education, etc.

Big data analysis reveals that 70% of Lhasa citizens felt 'extremely happy' in the past year, whose main concerns with the family (62.12%), marriage or emotional life (52.31%), and health conditions (46.92%). Income factor was given by only 36.15% of the respondents, while professional achievement is reportedly of minor influence.

Nationally, the top 3 happiness indexes are health conditions (54.19%), family (47.79%), and income (43.81%), the survey says.