Baidu colorful fish game, how to crack a mysterious stone tablet in the mysterious sea area?

.. breaking the mysterious stone tablet is playing the game in the mysterious whirlpool displayed on the map (the condition for removing the whirlpool is that the player level is above level 5). Each floor of the mysterious whirlpool will have a mysterious stone tablet, which is the first floor or the second floor. But to make a stone tablet, you must first find it in the six seals of the mysterious whirlpool, and the stone tablet will only appear randomly in one of the six seals. How to find it depends on luck. And every time you unlock a seal, you have to knock it six times to unlock it completely. Because every time you unlock the seal, there will be sea monsters, and you must destroy these sea monsters to unlock the seal. Every time I received the task of breaking the mysterious stone tablet, I gave up. It's too difficult, the magic value is not enough to find the stone tablet. By the way, there are three treasure boxes and two constellation fish in these six seals, 1 mysterious stone tablet.