Step 1: Prepare pears and grapefruit.
Step 2: Prepare rock sugar.
Step 3: Remove the endothelium of grapefruit and break it into small pieces.
Step 4: Peel and core Sydney, wash it and cut it into small pieces.
Step 5: Put the pears and rock sugar into a big bowl filled with grapefruit.
Step 6: Pour a bowl of water.
Step 7: put it in a steamer and steam for 20 minutes on high fire.
Step 8: Serve the rock sugar grapefruit pear soup and enjoy it.