Tian Shan Development (Holding) Limited announced that Mr. Cheung Siu Yiu ("Mr. Cheung") has stepped down from the position of Chief Financial Officer of the Company with effect from 11 November 2021 due to the difficulty Mr. Cheung has in travelling regularly to and from the head office of the Company in China under the current COVID-19 pandemic-related travel restrictions and other personal reasons. The Board further announces that Ms. Zhao Guiyan will be appointed as the Chief Financial Officer of the Company with effect from 11 November 2021. Mr. Cheung will remain as the Company Secretary of the Company.