This article explores Ethereum's governance process through seven major cases, providing a detailed analysis of the procedures and institutions involved in decision-making. It elucidates key events in Ethereum's history, including the DAO hard fork, Parity multisig bug, Constantinople upgrade, ProgPoW, Afrigate, the Merge, and the Shanghai upgrade. The article illustrates how developers and the community coordinate and resolve disputes, highlighting the complexity and challenges of Ethereum governance.