Operator
Operator
Ladies and gentlemen, thank you for standing by and welcome to Canaan, Inc Fourth Quarter and Full-Year 2021 Earnings Conference Call. At this time, all participants are in a listen-only mode. After the management's prepared remarks, we will have a question-and-answer session. Please note, that this event is being recorded. Now, I would like to hand the conference over to your host today, Ms. G. Zhang, Investor Relations Manager of the company. Please go ahead, Ms. Zhang.