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Earlier I wrote the blog article “How to be a postdoc in the US? http://www.sciencenet.cn/m/user_content.aspx?id=11258 , This article can be consider an extension. Because of improving and wealthy conditions of the Chinese economy, more and more scholars are self or government financed. When you don’t ask your sponsors for money, the problem becomes simpler. However, even if the Chinese government provides living expense and wages, THIS DOES NOT MEAN THERE IS NO COST TO THE SPONSOR AND INSTITUTION INVOLVED, AND THAT YOU SHOULD BE WELCOMED WITH OPEN ARMS. If someone provides you with an official invitation and status as a visitor, the following costs must still be shouldered by the sponsor:
1.Overhead cost (desk space, utility, all kinds free privileges such as library, athletic, and other facilities that comes with an official invitation) that will be charged to the sponsor directly or indirectly.
2.Cost of time ( the most important resources of a professor) involved in having a visitor such as free consultation, advise, on technical and social matters
Thus, while removing money consideration makes things easier, much of the rationale and many of the points I made in my postdoc article above are still valid. There is no free lunch!