Cast a Net to Catch the Sky

Fang Qingxian was an ordinary young man who went south to work. He accidentally got a tattered fishing net. Unexpectedly, he activated the "net to catch the sky system", which allowed him to catch items and creatures from the parallel, low martial, and high martial planes, and he lived a leisurely and happy life from then on. Cornucopia, Medicine King Cauldron, Ginseng Fruit... Red rabbit horse, griffin, Tyrannosaurus rex... What! Have all the mermaids been caught?