China's new high-income group tends to change jobs frequently. [Photo: sina.com.cn]

China's population of high-income earners, who have emerged since the reform and opening-up policy launched in 1978, stands at 72 million people, according to a report from sina.com.cn.

48 million of them are managers or technicians at private and foreign-funded companies, 14 million from intermediary organizations and social organizations, 11 million are freelance, and 10 million work at new media. Some people have two or more occupations.

In Beijing, high-income earners account for 8.4% of the city's population. The number is 14.8 percent in Shanghai, and 13.6% in Guangzhou, according to a blue book published by the Chinese Academy of Social Sciences. Those cities are the three largest in the country.

The average annual income of this emerging social class is 166-thousand yuan (23,997 USD), or double the amount of the national average. Average spending among high-income earners in 2016 was over 131-thousand yuan (18,937 USD), or 1.7 times the national average.

China's high-income earners are said to change jobs frequently. 53% of the respondents have changed jobs during their career, 37% higher than the average, said the blue book, and many of them said they plan to find another job or start their own business in the coming two years.

But the majority of the new class doesn't believe their family or themselves belong to the mid-income class. They said their income, total assets and consumption haven't reached the standard of the mid-income class.

The blue book analyzed that since the new class is mainly living in large cities, high housing prices and work pressure made them not believe that they belong to the mid-income class.