BNB Chain will carry out the network upgrade "Luban" at block height 29,020,050, and the estimated time is 5:30 on June 12, Beijing time. The Luban hard fork contains three BEPs: BEP-126, BEP-174, and BEP-221. Validators and full node operators on the mainnet should switch their software version to v1.2.4 by June 12, 2023. Among them, BEP-126 introduced the "Fast Finality" mechanism, which makes it impossible for a block to be reversed once it is finalized on the network. This reduces the likelihood of bad actors performing a chain reorganization should this occur. BEP-174 proposes "Cross-chain Relay Management", which aims to alleviate any potential security issues in BSC bridges. BEP-221 proposes the "CometBFT Light Block Validation" system, which proposes to add new contracts to blockchains using CometBFT technology.