Sunlands Technology Group (NYSE:STG) Q4 2019 Results Earnings Conference Call March 27, 2020 7:30 AM ET Company Participants Yingying Liu - Investor Relations Director Tongbo Liu - Chief Executive Officer and Director Steven Yipeng Li - Chief Financial Officer Conference Call Participants Operator Ladies and gentlemen, thank you for standing by, and welcome to Sunlands’ Fourth Quarter and Full Year 2019 Earnings Conference Call. At this time, all participants are in a listen-only mode. After prepared remark ...