 BEIJING, March 29, 2022 PRNewswire -- Sunlands Technology Group NYSE: STG Sunlands or the Company, a leader in Chinas online post-secondary and professional education, today announced that it will report its fourth quarter and full year 2021 unaudited financial results on Friday, April 8, 2022, before the open of U.S. markets. Sunlands management team will host a conference call at 7:30 a.m. 