Polygon Bridge User Guide
1. Export the private keys of ETH single-chain wallet
Importing/Exporting Wallet Private Keys and Mnemonic PhrasesChoose to export the private keys
2. Import the private key into Metamask
Click the avatar page in the upper right corner
Select "Import Account"
Paste the private key
3.Enter Polygon Bridge

4. Connect to Metamask
Choose a network
If you want to cross-chain assets from the Ethereum to Polygon, select "Ethereum Network". If you want to cross-chain assets from Polygon to Ethereum, select "Matic Network"

5. Cross-chain (for the cross-chain tutorial, please refer to the official MATIC tutorial for details)
Click "User Guide" to find tutorial

Enter the tutorial page via https://docs.matic.network/docs/develop/wallets/matic-web-wallet/web-wallet-v2-guide/
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