Please refer to the following links for visa-free entry and visa-free transit policies:
https://www.mfa.gov.cn/wjbzwfwpt/kzx/tzgg/202511/t20251110_11749824.html
https://english.www.gov.cn/policies/featured/202511/06/content_WS676548cbc6d0868f4e8ee28f.html
Please send request for invitation letter for visa application to (yuanb25@mail.sysu.edu.cn).