Inevitable. On the fifteenth day of the first month, the high-speed fee is unavoidable. Although the fifteenth day of the first month is the Lantern Festival, the expressway is not free because it is not a legal holiday. In a year, the free time of expressway is only the four national legal holidays, namely Spring Festival, Tomb-Sweeping Day, Labor Day and National Day, and the continuous holidays of these four legal holidays. During these periods, passenger cars with less than seven seats (including seven seats) can pass free of charge. Other festivals, including the fifteenth day of the first month, are charged normally.