1. Prepare the ingredients
2. Soak mung beans, lilies and lotus seeds for half an hour in advance
3. Winter melon peeled and fleshed, sliced
4. Put lotus seeds, lilies and mung beans into the pot, add appropriate amount of water and brown sugar flakes
5. Boil for 20 minutes
6. Pour the cooked soup into the pot and add winter melon
7. Add longan and boil over high heat, then turn to low heat and boil for 10 minutes
8. Can
