On October 26th, ECN and togETHer’s community partners (ETHPlanet/DAOSquare/原语里隆/Hiblock/Rebase/BTCU) held an Ethereum community Meetup in Shanghai. The atmosphere was active, full of dry goods, and various topics were discussed. , Including EIP-1559, Ethereum 2.0, MEV, DAO, blockchain security, etc. ECN hereby organizes these contents into articles to share with you, hoping to enhance the community's understanding and thinking about Ethereum.