What do you mean by lighting a street lamp?

Light a plant oil lamp. The traditional funeral custom of Han nationality is popular in Huaxian County, Shaanxi Province, that is, a plant oil lamp named "street lamp" is lit at the feet of the deceased. Shaanxi, referred to as "Shaanxi" or "Qin" for short, is a provincial administrative region of People's Republic of China (PRC), with the provincial capital An, located in the hinterland of China and the middle reaches of the Yellow River, bordering Shaanxi and Henan in the east, Ningxia and Gansu in the west, Sichuan, Chongqing and Hubei in the south and Inner Mongolia in the north.