The opening hours of public sports venues are not less than 35 hours, and the annual opening hours are not less than 330 days. During weekends, national holidays, national fitness days and school winter and summer vacations, the opening hours are not less than 8 hours per day, and the outdoor public areas and outdoor fitness equipment belonging to the venues are not less than 12 hours per day. Free and low-cost opening of large-scale venues should cover the peak hours of mass fitness such as morning exercises and evening exercises, and not all of them can be arranged at the peak hours of low demand for mass fitness such as meals.