When CryptoKitties took off in late 2017, it became one of the world's first NFT projects, bursting the Ethereum blockchain due to massive network congestion. The Dapper Labs research team found that the current blockchain is not ready to meet such a huge demand. Rather than wait for Ethereum to update, build your own blockchain, and developers can rely on it for large-scale projects. Thus was born Flow, a new blockchain built for the next generation of applications. Flow was created for NFT markets and cryptocurrency games and can scale massively without the use of sharding to keep transactions fast and low cost. The homepage of Flow's official website summarizes Flow's positioning in one sentence: Flow is a blockchain (public chain) created for the next generation of applications, games and digital assets. To better fulfill its mission, Flow customizes and upgrades existing public chain technologies. In this regard, Flow mainly makes four changes to support the availability of the whole public chain: (1) Parallel node work: improve the interaction speed and reduce the interaction cost. The collection, consensus, execution, and validation work that is done sequentially is done in parallel. Improve the working efficiency of nodes under the premise of ensuring security. (2) Developer optimization: quickly achieve on-chain finality and built-in logging. Cadence as resource oriented programming language (digital assets can be programming environment identified as valuable, and all interact with digital assets of code is set to follow the rules, for example through storage location identification digital assets ownership), accord with human body engineering, syntax, easy for developers to learn, audit and work more efficiently. (3) User experience optimization: account recovery and timely feedback of transaction status. Flow provides users with multiple signatures to retrieve their accounts, avoiding the trouble of recording lost private keys. At the same time, when users pass each transaction, Flow will inform users of the transaction status in an easy-to-understand language, which is convenient for users to make decisions. (4) Community governance: officially sponsored developers and content creators to improve the Flow ecosystem. Flow solicits ideas from developers around the world and sets up an ecological fund to encourage early adopters to promote long-term ecological prosperity. Such a clear positioning and public chain customization is thanks to the deep understanding of the development of NFT industry by the team behind Dapper Labs (the original CryptoKitties team). CryptoKitties' boom in 2017 also led to congestion on the ETH chain, slow transaction speeds, and high Gas bills (compared to what they were at the time), which to some extent limited the project's future potential. Therefore, Flow is born to solve the problem of NFT Flow on ETH chain to a certain extent. It can even be said that Flow itself is a public chain tailor-made for NFT.