On June 9, due to the growing threat of kidnapping by cryptocurrency holders, the Bitcoin investment family "Taihuttu Family" revealed that they had given up hardware wallets and instead hid cryptocurrency mnemons on four continents around the world. Taihuttu said that in the past eight months, they have adopted a hybrid storage system: encrypted mnemonic words are divided into parts, carved on fireproof steel plates and hidden on four continents, and the rest are stored through blockchain-based encryption services. Even if he was threatened with a gun, he could only provide limited assets in his mobile wallet. Currently, approximately 65% of the Taihuttu family's crypto assets are stored in cold wallets on four continents, with the rest stored in multi-signature wallets or decentralized exchanges for transactions and daily expenses.