Liu Hailin, deputy director of the Blockchain Special Committee of the China Communications Industry Association and invited researcher of the Guangdong-Hong Kong-Macao Greater Bay Area Research Institute recently said that the digital economy is characterized by "digitalization of assets" and "digital assetization", which can reduce financing costs. It is lower, wider, and more efficient. The technical foundation of digital assetization is the blockchain, and its most important feature is that it can pass multi-party authentication and multi-party endorsement. Therefore, it can become the technical foundation of a new generation of financial infrastructure. In his view, to establish a digital exchange, we must first solve regulatory issues. Previously, many financial scams and illegal fund-raising have borrowed the name of the blockchain and used the concept of digital currency, which caused a relatively negative impact, and also created the misunderstanding that blockchain and digital currency are the "most evils". We can promote the sandbox base to provide a tolerable and tolerable environment for financial innovation in a certain area and within a certain range.