何伟的文章:The Peace Corps Breaks Ties with China by Peter Hessler

https://www.newyorker.com/magazine/2020/03/16/the-peace-corps-breaks-ties-with-china

美中友好志愿者2016年度报告
https://s3.amazonaws.com/files.peacecorps.gov/documents/2016_Annual_Report.pdf

美中友好志愿者2018 年度报告
https://s3.amazonaws.com/files.peacecorps.gov/documents/ANNUAL_REPORT_2018_PDF.pdf