Nan an pressed salted duck was fermented by co-fermentation of Lactobacillus plantarum,Pediococcus pentosaceus,Staphylococcus xylosus and Micrococcus varians.
He sharpened the scythes on the grindstone, slaughtered a pig, caught and salted fish, ground barley in a water-driven gristmill and grew and stored potatoes.