To be clear, do you want her employed full time in China or the U.S.? If the latter, this was complicated before the pandemic and has become even more complica

To be clear, do you want her employed full time in China or the U.S.? If the latter, this was complicated before the pandemic and has become even more complicated with the ban on travel from China and other countries. But, depending on the intern's background, the standard options are the H-1B, L-1, and the O-1 as well as the J-1 but the J-1 is for trainees and interns and is generally limited to 12 or 18 months. The USCIS and State Department websites actually provide pretty good - albeit general - descriptions of the work visa options.