1. Wash hawthorn, remove seeds and slice, wash yellow pear, remove seeds and cut into small pieces, wash longan, peel and remove seeds, cut in half, rub lemon with salt, peel and remove seeds and slice. Dissolve brown sugar or brown sugar with purified water, spread the cut fruits in an enzyme bucket layer by layer, and spread the four fruits alternately. Pour the dissolved sugar into the enzyme bucket, add purified water to 6.5 liters, seal it, write the date, shake the bottle every few days and wait for about two weeks.

2. Enzyme is a kind of mixed fermentation broth which is made of fresh vegetables, fruits, brown rice, traditional Chinese medicines with homology of medicine and food, through a series of processes such as squeezing juice or extracting, and then adding fermentation strains such as yeast and lactic acid bacteria for fermentation. It is rich in nutrients such as sugars, organic acids, minerals, vitamins, phenols, terpenoids and some important bioactive substances such as enzymes.