After the mussels are brought back, it is best not to simply rinse them with water for processing. First, you can get a basin to soak the supernatant for 2 days, then start to change the water every 1 hour, then change the water after half a day, and change it twice the next day, so that it is basically clean, and finally wash it with salt water. After the second time, I will do some short-answer processing. Generally speaking, vendors will remove the gills and take the rest home to deal with themselves. To remove gills, remove a large piece of cyan or yellow from the strip, squeeze out a little cyan dirt from the small hole until it is too crowded, and then go to the small hole. In fact, all the cyan dirt in the intestines should be removed, washed and processed!