The idiom definition of scrape the bones to remove the poison: scrape away the poison that penetrates deep into the bones. Refers to thorough treatment to fundamentally solve the problem.
Source: "Three Kingdoms, Book of Shu, Biography of Guan Yu"
Original text:
Yuchang was hit by a stray arrow, piercing his right arm, but the wound healed later , every time it rains, my bones often hurt. The doctor said: "The arrowhead is poisonous and the poison has penetrated into the bone. The arm should be broken and the bone scraped to remove the poison. Then the ear can be removed." Yu then stretched out his arm and ordered the doctor to chop it. At that time, Yu Shi asked the generals to eat and drink in front of each other. The blood from their arms flowed away and filled the dishes.
Translation:
Guan Yu was once shot by a random arrow, which penetrated his right arm. Although the wound healed later, (but) his bones often hurt every rainy day. The doctor said: "The arrow is poisonous, and the poison has penetrated deep into the bone marrow. It is necessary to open the wound on the arm and scrape the bones to remove the toxin. Only then can this hidden danger be eliminated."
Guan Yu then stretched out his arm and asked the doctor to open it open. At that time, Guan Yu was sitting around drinking with other generals, and his arms were dripping with blood, which overflowed the plate filled with blood. However, Guan Yu was cutting meat and drinking wine, talking and laughing as usual.
Extended information:
Related figures:
Guan Yu, the Hou Tinghou of the Han Dynasty, was the only famous general of the Shu Han Dynasty in the Three Kingdoms, with the courtesy name Yunchang. A native of Jie County, Hedong. At the end of the Eastern Han Dynasty, Guan Yu followed Liu Bei in raising troops to suppress the Yellow Turban Rebellion, and assisted Liu Bei with Zhang Fei. They were loyal and "benevolent like father and son" and were praised as the embodiment of loyalty.
Liu Bei was defeated by Cao Cao in Xuzhou and Guan Yu was captured. Although Cao Cao treated him favorably and was granted the title of Hou Tinghou of the Han Dynasty, he still killed Yan Liang to repay Cao Cao and surrendered to Liu Bei. In the 21st year of Jian'an, Emperor Xian of the Han Dynasty guarded the five counties of Jingzhou and only one of them.
In the 24th year of Jian'an, Guan Yu invaded Cao Wei in the north. He flooded seven armies, captured him, and beheaded Pang De, which shocked China. He surrounded Cao Cao's general Cao Ren in Xiangyang County, reaching the highest military peak, but Jingzhou's rear Soochow Lu Meng took the opportunity to seize Jingzhou with the White Clothes Strategy. Guan Yu could not attack Xiangfan for a long time, so he had to retreat. Since Jingzhou was captured by Soochow, on the way back, all the soldiers were separated and fled.
Guan Yu was also captured by the Wu army and killed. His "loyalty" and "righteousness" were exaggerated and deified by later rulers, who respected him as "Guan Gong" and "Guan Di". Today, "Guandi Temple" is built in vast rural areas in many areas of North China, commonly known as "Guanlaoye Temple".
Reference: Baidu Encyclopedia - scraping bones to remove poison