According to the China Securities Network, on August 24, Wang Yongli, the former deputy governor of the Bank of China, said at the first Nankai Financial Technology Summit in 2019 that the landing of the central bank's digital currency still faces great challenges. On the one hand, we have not seen the detailed description of the central bank's digital currency white paper. On the other hand, how to replace, use, and control the central bank's digital currency, how to link and manage the traditional monetary system, etc., needs to be resolved. Regarding the blockchain technology, Wang Yongli believes that it is necessary to further explore the blockchain technology. "The attitude must be positive, but it must be rational, and we must not blindly invest."