Put the mung beans in a bowl, cover them with water, and let them soak for at least 1 hour.
Drain and rinse the beans under cold water. Add the beans to a medium pot along with 10 cups of water. Bring to a boil over high heat then reduce heat to medium-low, cover and simmer until tender (about 40 minutes or longer depending on your desired consistency). Stir occasionally.
Add dried lily bulbs, dried red dates, and dried red lotus seeds. Continue simmering for 10 more minutes.