According to People's Daily News, on May 27th, the 2019 Expo “blockchain: the cornerstone of digital civilization” was held at a high-end dialogue. Di Gang, deputy director of the Digital Money Research Institute of the People's Bank of China, said that since the pilot of the “Bay Area Trade Finance Blockchain Platform” in September 2018, the platform has had four applications, accessing 26 banks and generating 17,000. A multi-business, with a total amount of more than 4 billion and a number of patents. He also pointed out that “blockchain awareness needs to be upgraded, and blockchains cannot be used for blockchains. Not all projects require blockchains. Not all data needs to be chained, and blockchains still have credible problems. The chain needs to find the right scene and is driven by demand. The blockchain is suitable for multi-party collaboration, peering all parties, breaking data barriers, and improving collaboration efficiency."