What causes nosebleeds due to "internal heat" in the nose?

Nosebleeds caused by "excessive internal heat" (a traditional concept) are often due to factors such as excessive body heat and dry air. The mucous membrane inside the nasal cavity is delicate and prone to dryness, making it easy to bleed during actions like blowing or picking the nose—especially common in autumn and winter when the air is particularly dry. For nosebleeds, the nasal cavity can be rinsed with mild saline solution, and erythromycin ointment can be applied inside the nose to maintain moisture. It's also advisable to eat more light and清淡 foods in daily life.