What does it mean to dream that I caught a lot of fish and one of them died?

The fish in the dream is a superstitious symbol of wealth. Your dream of catching fish may indicate a fortune in the near future, but if you are bitten by a fish and don't catch it, this fortune may eventually come to nothing, and you may suffer a small loss.

These are all feudal superstitions.

Divination is actually a way to guide your future life. Since I dreamed of this phenomenon, I should pay more attention not to be greedy and cheap, and never let superstition interfere with your life too much.