Goerli ETH ($GETH) is a testnet on Ethereum. Goerli is a decentralized computing network who’s ledger is separate from the main Ethereum ledger, so transactions do not cross over between the two. It runs on a different consensus system, proof of authority, rather than the Ethereum mainnet proof of stake (PoS).
LayerZero is an omnichain interoperability protocol designed for lightweight message passing across chains. LayerZero provides authentic and guaranteed message delivery with configurable trustlessness.
The Testnet Bridge launched by LayerZero created a market for ETH/GOERLI-ETH (GETH), allowing users to transfer their ETH on mainnet to Goerli testnet, which means that users no longer need to receive test tokens through Goerli faucets or other channels, and it also means that GETH, which is a test coin, has "True value". The Testnet Bridge by LayerZero is designed to help developers obtain a sufficient amount of Goerli ETH.
As long as users buy gETH on Ethereum, users can get the corresponding ETH (testnet version) on the Goerli network; on the contrary, if users convert ETH to mETH on the Goerli testnet, they can get the corresponding ETH on Ethereum (mainnet version). All the above operations are completed with one click. In addition to exchange, users can also add liquidity to the liquidity pools of the two networks.