Use meat or bones, cook them and put them in a shrimp net bag, and you can catch a lot of shrimp the next day.
River shrimps like to grow in crevices and places with aquatic plants on the shore. It is best to wrap the bait with gauze and fix it in the center of the net. When shrimps smell the fragrance, they will gather around the bait. Generally, it takes ten minutes to slowly lift the net.