In what year did Qin destroy Chu?

In 225 BC, the generals of Qin Li Xin and Wu Meng attacked Chu. Being unprepared for underestimating the enemy, the Chu army broke two battalions and was defeated. The following year, the king of Qin reassigned Wang Jian to attack Chu with 600,000 troops, and once again captured Pingyu (now Pingyu North, Henan Province) in Chu. Xiang Yan was also a general of Chu, and mobilized the whole country to fight against Qin. After Wang Jian entered Pingyu, he built fortifications and kept them well, waiting for the fighters. The Chu army challenged several times before going to Qin Ying, but Qin Jun trained his military forces according to Wang Jian's deployment, but failed to hold on. The two armies confronted each other in Pingyu for more than a year. Chu Jun's heart was distracted and his spirit was greatly weakened, but Qin Jun was saving his strength and fighting spirit. At this point, Xiang Yan thought that Qin Jun only occupied Pingyu and had no intention of going south, so he led a tired army to retreat eastward. Seeing that the fighter plane was mature, Wang Jian took advantage of the situation and led the elite soldiers to pursue it. Kill Xiang Yan in Qinan (now southeast of Su County, Anhui Province) and annihilate the main force of Chu Army. In the twenty-third year (224 BC), the king of Qin summoned Wang Jian again by imperial edict, forcibly used him and sent him to attack Chu. He captured the land from Chen county to Pingyu county and captured the king of Chu. The king of Qin cruised to Hechen County. The State of Chu established Yan as the King of Changping and turned against the State of Qin in the south of Huaihe River. In the 24th year of Jian 'an (223 BC), Wang Jian and Wu Meng attacked Chu and defeated the Chu army. Changping Jun died and Xiang Yan committed suicide. Chu is adjacent to Qin in the west. Despite repeated invasions and declining national strength, by the end of the Warring States Period in China, it was still a major obstacle to the reunification of the State of Qin. After Qin captured Zhao Handan (now Hebei) (see the battle of Qin destroying Zhao), he moved south to resist Chu. In the 21st year of Ying Zheng, King of Qin (226 BC), General Wang Ben of Qin took more than ten cities of Chu. Ying Zheng didn't listen to Wang Jian's advice. He attacked Chu with 600,000 troops and sent Li Xin and Wu Meng to attack Chu with 200,000 troops. In twenty-two years, Li Xin and Meng Wubing went deep into Chu in two ways in an attempt to panic in the Chu army. Xiang Yan, the famous Chu soldier, concealed his main force and fought back. Li Xinjun failed to seize the decisive battle of the main force of Chu Army and returned to join forces with Wu Meng. The Chu army secretly followed for three days and nights, and unexpectedly attacked and killed seven captains. Li Xin was also defeated by Li. Ying Zheng, king of Qin, used veteran General Wang Jianwei. In twenty-three years, Wang Jian led 600,000 troops to Pingyu in the south of Chen (now Huaiyang, Henan) (now Pingyu in the north of Henan). Chu meets Qin Jun. Qin Jun stood by the camp and stood by. The Chu army couldn't fight, so it retreated eastward. Wang Jian pursued, defeated the Chu army and killed Xiang Yan. Qin Jun attacked the cities. In twenty-four years, Shouchun (now Shouxian County, Anhui Province), the capital of Chu State, was defeated by King Lu, and Chu State perished. Qin Shihuang's cause of unifying the six countries was basically completed. Hope to adopt