Operator
Operator
Ladies and gentlemen, thank you for standing by and welcome to Sunlands' First Quarter 2019 Earnings Conference Call. At this time, all participants are in a listen-only mode. After prepared remarks by the management team, there will be a question-and-answer session. Today's conference call is being recorded. If you have any objections, you may disconnect at this time. I would now like to turn the call over to your host today, Yingying Liu, Sunlands' IR Director. Please go ahead.