BII Railway Transportation Technology Holdings Company Limited provided earnings guidance for the six months ended June 30, 2021. For the period, the company expected the profit for the Period to increase by no less than 100% as compared to the profit recorded in the corresponding period of 2020. The expected increase is made mainly due to Beijing Metro Co. Ltd. has reached a revenue risk and profit sharing mechanism with regard to the operation of Beijing Subway Airport Express and Floor 2-6 of Dongzhimen Terminal with Beijing Dongzhimen Airport Express Rail Co., Ltd, the transferor of such rights, which together with the improvement of passenger flow of the Beijing Subway Airport Express has led to an increase in Beijing Metro's profit for the Period and thus the Group has witnessed an increase in its investment income, and the continued growth of the civil communication 4G business in the Group's infrastructure information business segment.