Stupid sister-in-law

To be honest, Diana Cyrus and the others didn't understand why Rachit chose the largest rock fishing rod.
This largest-sized rock fishing rod is specially used to catch fish weighing more than 100 kilograms. However, Moon Lake is just a very small freshwater lake. How could there be fish weighing more than 100 kilograms in it?
Even if there was, it must have happened a hundred years ago, right?
In recent years, the fish in Moon Lake have been caught in large numbers by fishermen, and...