When a DeFAI strategy's performance keeps worsening, or a team decides to stop maintaining it, how funds should safely and orderly exit is a mechanism design often overlooked by users, yet one that directly determines the actual scale of loss at the moment of exit — a strategy with a well-designed sunset mechanism lets users recover their assets promptly once the strategy is confirmed defunct; a poorly designed one can leave a user's funds stuck in an environment no one maintains anymore, with liquidity gradually drying up and nowhere to turn for help.