Soak the featured dendrobium strip in water for about 1 hour, rinse thoroughly for later use;
Rinse the Ningxia fructus and natural ophiopogon in water thoroughly for later use;
Remove the kernel of the Red Dates(XL); rinse the Thailand dried longans-large thoroughly for later use;
Put all ingredients(except fructus) into a casserole, pour in some hot water, turn to low heat after boiled; continue heating for about 2 hours;
Put in the fructus, continue heating for 15 minutes, add rock sugar before serving.