I saw his on The Straits Times, the main English newspaper in Singapore.
Accrording to this survey from 7000 respondents, China is the most desirable country for expats beating even Germany.
Different people have dfferent reasons for picking certain countries as their No.1.
These are the reasons why I would pick China :
Pro business climate : The Chinese are the most entrepreneurial and business driven people in the world
Market size : Most populous country in the world
Good testing ground : Still many new markets to try out new marketing concepts and business strategies
Talent Pool : There are plenty of smart people you can hire or work with in China and work with them.
Diversity : One country, many cultures
Costs : You are still able to run a business at low costs and yet have access to a huge market. Like what s businessman said before "One fifth the costs, five times the market"
Learning experience: Lots of ideas and concepts you can learn and bring back to the western world