How many R&D personnel does the company have in 2020 and the first half of 2021? How much money has been invested in R&D?

Changdian Technology: Hello, at the end of December 2020, the total number of R&D personnel of the company was 5,949, and the R&D expenses in 2020 were RMB 1.019 billion. For the R&D expenses in the first half of 2021, please pay attention to the 2021 semi-annual report to be disclosed on August 21, 2021. Thank you!