According to the Economic Observer, Sun Haibo, the head of the technology research and development department of JD.com ’s Blockchain Department, said in an interview that the main difficulty of the blockchain is in its applicability. Not all companies are able to apply the blockchain now, and the development of technology landing applications is normally carried out. In addition, the blockchain itself has technical bottlenecks. Such as its performance, security, stability, etc. These are the places we need to overcome in the future.