May I ask the Secretary: What is the reason for the company's loss in the fourth quarter of 2021? What is the main operating income for the whole year of 2021? Is there any asset impairment or credit impairment provision in the fourth quarter?

Wanji Technology: Hello, the company achieved a net profit of RMB 42.58 million attributable to shareholders of the parent company of the listed company in 2021. The loss in the fourth quarter of 2021 was mainly due to the company's continued increase in R&D investment in new business directions such as LiDAR and intelligent networking, which led to an increase of RMB 29.11 million in R&D expenses year-on-year and RMB 42.14 million month-on-month, as well as a provision of RMB 17.72 million in credit impairment losses in the fourth quarter. The company achieved revenue of RMB 944.8534 million in 2021. Thank you.