（1）Obtain at least one piece of fishing NFT equipment, which can be purchased through the market or drawn from the blind box
（2）Select the sea area for fishing (you can enter the high seas for free, or pay to enter the private waters to obtain advanced fish species)
（3）Catch fish, metals and other rewards
（4）The caught fish can be sold in the market or placed in the fish farm for breeding and appreciation. Metal can be used to upgrade and repair fishing gear.