Bip39 Seed. Although you will discover BIP39 wordlists in languages apart from English, it is actually strongly not advised to make use of non-English words for wallet backups. It would make restoring the wallet hard or impossible. No, there's no technological limit to your duration of your passphrase. Even so, https://tealbookmarks.com/story19448438/bip39-generator-https-linktr-ee-bip39-getting-my-bip39-passphrase-to-work