Operator
Operator
Ladies and gentlemen, thank you for standing-by and welcome to Aurora Mobile Fourth Quarter and Full-Year 2019 Earnings Call. At this time, all participants are in a listen-only mode. After the speakers' presentation, there will be a question-and-answer session. [Operator Instructions] Please be advised that today's conference is being recorded. I would like to hand the conference over to your first speaker today, Mr. Christian Arnell. Thank you. Please go ahead.