Yusheng Han | Founder, Chairman and Chief Executive Officer |
Shannon Chuai | Chief Operating Officer |
Joe Zhang | Chief Technology Officer |
Leo Li | Chief Financial Officer |
Good day. And thank you for standing by. Welcome to Burning Rock's 2021 First Quarter Earnings Conference Call. At this time, all participants are in a listen-only mode. After speaker's presentation, there will be a question-and-answer session.