By virtue of the openness and transparency of the public chain, EtwhChain is integrated into the smart contract of Ethereum, reducing the cost of business execution and making the rules transparent. BDF is used in online shopping, offline shopping malls, entertainment and gaming, catering payments, real estate hotels, luxury goods, etc. EtwhChain is committed to creating a global payment ecosystem, improving the user experience of cryptocurrencies in all consumption scenarios, and establishing a global cashless transaction system. Based on 5G information, EDF takes financial payment combined with blockchain as an entry point to create a global new blockchain financial payment free trade platform, and uses blockchain as the bottom layer to support the digitalization of the entire ecology.