Babbitt reported that on June 29th, the 2019 Ethereum Technology and Application Conference hosted by CSDN was held in Beijing. CSDN founder Jiang Tao: "The technical era of DeFi/open finance has just begun. At present, more than 4 billion US dollars of financial applications are running in Ethereum. On the Internet, e-commerce and information fields have undergone tremendous changes. In the block In the chain, the financial sector has great potential and opportunities, and it is also the most worthwhile to explore in the blockchain. In addition, Jiang Tao also counts the data to measure the various dimensions of the Ethereum ecology, as shown in the following figure.