xxxxx university xx, xx, p. r. china, zipcode
dear dr. xxxx
it is my pleasure to invite you as a visit scholar(or postdoc) to visit , from xx-xx to xx-xx. .
i understand you will be supported by a scholarship from the china scholarship council.
you will be performing research under my direction, and with members of my group, on the fields of xxxxx . you shall be provided an office and access to our lab and other research facilities as appropriate.
we look forward to your visit.