No number limit. According to the information on the official website of Tianjin Local Treasure, during the National Day in 2023, vehicles in Tianjin can enjoy unlimited travel for 8 days. The free period will start at 0:00 on October 1 and end at 24:00 on October 8. Tianjin is a municipality directly under the Central Government of China, located on the Bohai Bay in northern China. It has a long history and culture, rich natural resources and economic strength.