The company disclosed that the number of R&D personnel in 2020 was 5,949. Why were the number of R&D personnel in 2020 and 2021 only 2,806 and 2,808 respectively? The company disclosed the educational background distribution of R&D personnel in 2021 and 2022, but it did not disclose it in previous years. Can you explain the educational background distribution of R&D personnel from 2012 to 2020?

Changdian Technology: Dear investors, hello. Starting from 2021, in accordance with the Content and Format Guidelines for Information Disclosure by Companies Issuing Securities No. 2 - Content and Format of Annual Reports (revised in 2021), the company has adjusted its disclosure scope. The new scope does not include grassroots scientific and technological personnel, resulting in a decrease in the number of disclosed R&D personnel. In addition, the company also disclosed the number of group technical personnel (including R&D personnel) in each year, which were 5,949, 6,011, and 5,985 in 2020, 2021, and 2022, respectively. There was no significant difference in the number of personnel in 2021-22 and 2022. Before 2020, we disclosed the overall educational background of the company's employees. For specific distribution data, please refer to the education level classification in the employee situation of the parent company and major subsidiaries disclosed in the company's annual reports. Thank you for your attention and support to the company.