On October 30th, at the 2019 Samsung Developers Conference held in San Jose, the founder of the wave field, Sun Yuchen, said that in addition to the cryptocurrency transaction, he believes that there are two development directions for the future development of the blockchain. One is Dapp. Ecology, one is DeFi, DeFi is a promising future direction. In addition, 5G will make communication between blockchain nodes faster, faster processing, and applications deeper into people's lives. For the latest speech on blockchain published by General Secretary Xi Jinping, Sun Yuchen said that China is the first country to mention the blockchain to a strategic position, which will have a great impact on regulators in many countries. In the next 3-5 years, China will play a leading role in the blockchain field.