Explanation: 1, brittle bone. Often refers to the elderly who are weak or the poetry content is thin; 2. Animal cartilage used as food; 3, especially the edible animal cartilage in food, such as the front end of chicken keel process and the articular surface of pig bone; 4. Transliteration of "Supreme" in Korean.
Quote verse: Northern Zhou Yuxin's Zhuqian Fu: "Cold customs are sad, the journey is sad, the hair is sparse, and the bones are weathered." .