Is there much traffic in Shenzhen Outer Ring Road at night?

A lot. Shenzhen is a prefecture-level city and a sub-provincial city under the jurisdiction of Guangdong Province. The morning peak of Shenzhen Outer Ring Road is 7:00-9:00 a.m. and the evening peak is 5:30-7:30 p.m. The Shenzhen Outer Ring Road Expressway, referred to as "Shenzhen Outer Ring Road Expressway", is a ring road expressway in Guangdong Province, China, a transit expressway in Shenzhen and a part of the expressway network in Guangdong Province.