The two reporters had been incarcerated since 2017 for their reporting on the plight of the Rohingya. Asia Society awarded them with Asia's most prominent journalism prize last year.
Chinese authorities have been increasingly censoring foreign media, but studies suggest they may be better off letting it in.
"Pent-up grievances are being unleashed," say Reuters journalists of the sectarian violence in Myanmar. For its coverage, Reuters won Asia Society's 2014 Osborn Elliott Prize for Excellence in Journalism in Asia.