I'm Devin Zuo, CTO of WDNA World Gene Public Chain, a former Blockchain Technology Expert of Ping An Technology which is subsidiary of Ping An Group, Founder of Blockchain LangYa Academy, Blockchain Technology Lecturer of Financial Blockchain Shenzhen Consortium and Shenzhen Financial Technology Association, One of the authors of Blockchain Development Guide, One of the first blockchain test review experts in China, Invited guest speaker of the 1000-member Experts Association, Invited blockchain guest speaker of Kingdee Group, 15 years of IT industry experience, 12 years of experience in Java platform development, management and architecture design. He was a senior architect in several well-known companies. As a blockchain technology expert on behalf of Ping An Technology participating in ISO/TC 307 blockchain international standards review, and specializes in the underlying technology of Hyperledger Fabric. Currently I'm researching public blockchain, cryptocurrency wallet and wallet security technology.