The study looked at how different types of rainfall and soil moisture levels affect runoff on a hillslope in China. They found that the accuracy of predicting runoff decreased as rainfall intensity increased. The combination of soil moisture and rainfall amount determined whether runoff occurred, with a threshold range of 97-139 mm. Heavy rainfall events caused the most errors in predicting runoff. For lighter rainfall, intensity was the main factor, while for heavier rainfall, the amount of rain played a bigger role. This research helps us understand how runoff is generated on hillslopes in regions with similar climates and hydrology.