The twelfth contract section of Jiangluo Expressway is located in Yun'an County, Yunfu City, Guangdong Province, with a starting and ending mileage of RK102+660 ~ RK111+750. The starting point of this section is Shima Village, Nanshang Town, Yun'an. Nansheng Interchange and connection line are set near Qidong Village to connect with Nanshang Town. After passing Jianfengding, Shanglangkeng, and then crossing Sanchading (with an extra long tunnel at Sanchading), the route exits