The highest level of safety factor: hardware wallet
Prepare a onekey. If you don't have one, you can buy one at a very cheap price. The official website is https://crowdfund.onekey.so?ref=OVGLHQ (there should be a rebate, but I have not successfully obtained it before)
After getting it, activate the wallet OneKey First Generation Hardware Wallet Activation Tutorial – OneKey - Help Center
Download the onekey browser plugin https://onekey.so/plugin (same as the little fox)
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Insert hardware wallet (fingerprint and server are OK)
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Link hardware wallet
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Note: Be sure to remember passphrase
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Here, N wallet addresses are generated in batches, and a mnemonic is used! ! ! When selecting an address by lottery, click metamask, which is a browser plug-in that can directly call up onekey, click [sign]