Junfeng Chen developed onboarding and technical documentation for the IntensiveCoLearning/Ethereum-Protocol-Fellowship, focusing on accelerating developer ramp-up and clarifying Ethereum protocol concepts. He consolidated learning notes on execution and consensus layers, network stack components like devP2P and Kademlia, and EIPs, using Markdown and Go to structure and illustrate key ideas. In March, he expanded documentation across two repositories, detailing Ethereum data structures such as the Merkle Patricia Tree and storage models, and explored Solidity storage layout and EVM concepts. Chen’s work emphasized disciplined documentation practices, providing in-depth references and practical examples to improve onboarding and knowledge sharing for Ethereum developers.