Nantong, a city in Jiangsu Province, China, is known for its traditional courtyard architecture. A sunken courtyard refers to a courtyard that is lower in elevation than the surrounding area, creating a more intimate and secluded space. The rendering of a Nantong sunken courtyard would depict a traditional Chinese garden with elements such as stone pathways, a pond, and lush greenery, reflecting the city's rich cultural heritage.