Effectiveness on behavior regarding to practice for reducing salt and physical activities Effectiveness on behavior regarding to reduce salt: Reducing salt: Although the intervention had only been carried out for a period of 12 months and only had a propaganda effect on the harmful effects of salty eating (which is not available for direct observation or measurement), the study has also obtained initial results, after the intervention, the proportion of patients in the intervention groups who performed light eating increased by 5.2% compared to pre-intervention, while the rate in the controlled groups decreased by 0.2%.