This sentence comes from "Climbing Mount Tai" by Yao Nai of Tongcheng School.
"Cangshan bears snow" is a common image, which can be experienced by many life experiences. The blue-black mountain is covered with white snow, and black corresponds to white. A "negative" word makes the mountain come alive, which is wonderful. In just four words, the common scenery has become extremely concise and vivid.
The southern candle shines on people is more interesting. It should be noted that the word "candle" here is not a candle, but a noun used flexibly as a verb, meaning "lighting up" (knocking on the blackboard, here is the test center). The snow light of the snow brightened the southern sky. After reading it, such an image will naturally emerge in your mind, as vivid as Chinese painting.