Bip39 Seed Phrase. Despite the fact that you can find BIP39 wordlists in languages aside from English, it's strongly not suggested to implement non-English words for wallet backups. It might make restoring the wallet complicated or unattainable. No, there isn't a technological limit into the size of the passphrase. However, https://crossbookmark.com/story18679372/bip39-wallet-https-linktr-ee-bip39-the-bip39-wallet-diaries