1. Eliminating phlegm: The smell of grapefruit can stimulate taste buds and help to remove food residues and sticky mucus. This helps to eliminate the stagnation of respiratory tract and digestive system.

2. Improve immunity: Vitamin C rich in honey grapefruit tea helps to improve immunity and protect the body from bacteria and viruses.

3. Alleviate cold symptoms: Vitamin C and the anti-inflammatory properties of grapefruit help to alleviate cold symptoms and relieve stuffy nose and sore throat.

4. Promote digestion: Citric acid and pectin in grapefruit help promote digestion and relieve the symptoms of gastric acid reflux.

5. Help lower cholesterol: Phytochemicals contained in grapefruit can help lower cholesterol levels, thus helping to protect heart health.

6. Promote metabolism: The energy and metabolic activators contained in grapefruit help promote metabolism and help the body make better use of nutrients.

To sum up, honey grapefruit tea in Tianwo Tea House has many functions, which can help people to improve their health.