According to the interconnected pulse news, on December 11, the fourth "2019 China (Shenzhen) Fintech Global Summit" was held. At the meeting, Di Gang, the deputy director of the Digital Currency Research Institute of the People's Bank of China, talked about the current development status of blockchain and pointed out that the architecture is diverse and compatible, and cross-chain is the development direction. At present, blockchain projects are independent and closed systems that cannot communicate with each other. The old "islands" have disappeared and new "islands" have emerged. At present, the cross-chain of homogeneous chains is mainly dominated by the industry. Breakthrough and innovation in the field of chain interoperability; the lack of recognized technical standards and cross-chain solutions in the blockchain field, and the huge cost of application migration and adaptation. Regarding the status quo of standards issues, the Digital Currency Research Institute of the People's Bank of China has taken the lead and is about to complete the industry's first blockchain security standard specification.