The Central Region Branch Office of the Freeway Bureau planed and paved the road surface for the "2022 National Highway No. 1 Daya to Dalin Road Section Asphalt Concrete Pavement Renovation Project", scheduled for May 30, 2022 (Monday) and May 31, 2022 ( Tuesday) From 21:00 to 6:00 the next day, the road surface for the north entrance of National Highway No. 1 Dounan Interchange (towards Dounan) would be renovated. The ring road would be closed at that time. Please cooperate with passersby to divert the road in advance.