The parking lot of Cixi Library is charged. According to the inquired public information, the charging methods and charging standards of the parking lot of Cixi Library are: charging by time, free for the first 1 hour, charging 5 yuan for the interval 1 to 3 hours, and charging 2 yuan for every hour after 3 hours (less than 1 hour is 1 hour). Maximum charge for all motor vehicles every 24 hours.