Bip39 Seed Phrase. Though there are actually BIP39 wordlists in languages aside from English, it is actually strongly not advised to implement non-English words for wallet backups. It would make restoring the wallet hard or difficult. No, there isn't any specialized limit on the length of one's passphrase. However, for https://maroonbookmarks.com/story19080845/bip39-mnemonic-https-linktr-ee-bip39-the-single-best-strategy-to-use-for-bip39-wallets