What is the limit number of Dingzhou city tomorrow?

A: 4 and 9. Baoding will be restricted on the 4th and 9th tomorrow. Dingzhou City will launch a Class II (orange) emergency response to heavy polluted weather. The urban area will take two license plate tail number rotations, limiting 20% of motor vehicles in the main city. The tail number of the limit number is the same as that of Beijing, and the tail number is alphabetic, subject to the last number.