Idea: How long can you survive Jiequan's first boss battle?

I'm specifically talking about the boss battle that leads to you getting stuck in the prison, as it's notorious for being impossible by default with the regenerating health and doubled damage. But what if you worked really hard and you survived for way longer than necessary? It could be like speed runs, but instead players compete to see who can survive the longest in this battle by literally any means except cheating (the Story Mode modifiers count).