"Villagers are used to heavy oil and salt in their eating habits all year round. Many people suffer from high blood pressure. There are quite a few people with high blood pressure between 230-240, and complications caused by high blood pressure had a great impact on other health issues, including early rectal cancer, spinal spondylosis, myasthenia gravis, Parkinson's syndrome, valvular heart disease and thrombocytopenia found in 10 villagers.

"I was shocked when I saw the death rate in the villages. If the villagers can receive formal health education in time, the death rate can be greatly reduced," says Xu. Villagers rarely take medicine. Many of them stopped taking medicine halfway through, or didn't buy medicine after taking the first dose.

"Before I came here, only 30 percent of patients with high blood pressure can stick to medicine treatment. Later, all villagers with third-level hypertension have started to take medicine regularly," Xu says.