The second benefit is to extend the holding period of tokens for users. Although there are external trading pairs (such as Uniswap) that allow users to quickly cash out XPET and BPET, the game is designed as a custodial wallet, which means users need to transfer the tokens to an external address or go through a two-factor authentication process to obtain the private key and log into another wallet. Otherwise, they cannot quickly liquidate their tokens in the external market, thus extending the lifespan of the Ponzi economy.