Emperor Taizu of Song in the context of "History of the Song dynasty"

The Song dynasty (/sʊŋ/ SUUNG) was a unifying imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Ten Kingdoms, ending the Five Dynasties and Ten Kingdoms period. The Song often came into conflict with the contemporaneous Liao, Western Xia and Jin dynasties in northern China. After retreating to southern China following attacks by the Jin dynasty, the Song was eventually conquered by the Mongol-led Yuan dynasty.

The dynasty's history is divided into two periods: during the Northern Song (北宋; 960–1127), the capital was in the northern city of Bianjing (now Kaifeng) and the dynasty controlled most of what is now East China. The Southern Song (南宋; 1127–1279) comprise the period following the loss of control over the northern half of Song territory to the Jurchen-led Jin dynasty in the Jin–Song wars. At that time, the Song court retreated south of the Yangtze and established its capital at Lin'an (now Hangzhou). Although the Song dynasty had lost control of the traditional Chinese heartlands around the Yellow River, the Southern Song Empire contained a large population and productive agricultural land, sustaining a robust economy. In 1234, the Jin dynasty was conquered by the Mongols, who took control of northern China, maintaining uneasy relations with the Southern Song. Möngke Khan, the fourth Great Khan of the Mongol Empire, died in 1259 while besieging the mountain castle Diaoyucheng in Chongqing. His younger brother Kublai Khan was proclaimed the new Great Khan and in 1271 founded the Yuan dynasty. After two decades of sporadic warfare, Kublai Khan's armies conquered the Song dynasty in 1279 after defeating the Southern Song in the Battle of Yamen, and reunited China under the Yuan dynasty.

Guo Zongxun (Chinese: 郭宗訓) (14 September 953 – 973) or Chai Zongxun (Chinese: 柴宗訓), also known by his posthumous name as the Emperor Gong of Later Zhou (Chinese: 後周恭帝), was the third and last emperor of the Chinese Later Zhou dynasty, during the Five Dynasties and Ten Kingdoms period. He reigned from July 959, when he succeeded his father Chai Rong (Emperor Shizong of Zhou), until February 960, when he was overthrown by his general Zhao Kuangyin (Emperor Taizu of Song), who founded the Song dynasty.

The Emperor Gong was sent away with his mother to Xijing (西京). Despite assurance by the Emperor Taizu of Song that the Chai family would be treated with respect, the Emperor Gong was killed in 973 by Xin Wenyue, an official trying to gain favour with the emperor. Upon hearing the news, the Emperor Taizu ordered a period of mourning and buried the dethroned emperor next to the Emperor Shizong's tomb.

Zhao Jiong (20 November 939 – 8 May 997), known as Zhao Guangyi from 960 to 977 and Zhao Kuangyi before 960, also known by his temple name as the Emperor Taizong of Song, was the second emperor of the Song dynasty of China. He reigned from 976 to his death in 997. He was a younger brother of his predecessor Emperor Taizu, and the father of his successor Emperor Zhenzong.

Why Emperor Taizong succeeded his brother rather than Emperor Taizu's grown sons (Zhao Dezhao and Zhao Defang, who both died in their twenties during his reign) is not entirely understood by later historians. According to official history, his succession was confirmed by Emperor Taizu on their mother Empress Dowager Du's deathbed as a result of her instruction. A popular story dating back from at least the 11th century suggests that Emperor Taizong murdered his brother in the dim candlelight when the sound of an axe was allegedly heard. Whatever the truth, Zhao Guangyi had been prefect of the Song capital Kaifeng since 961 where he gradually consolidated power. He was the only living prince during Emperor Taizu's reign (as Prince of Jin) and placed above all grand councilors in regular audiences.

The Jingkang Incident (Chinese: 靖康事變; pinyin: Jìngkāng shì biàn), also known as the Humiliation of Jingkang (靖康之恥; Jìngkāng zhī chǐ) and the Disorders of the Jingkang Period (靖康之亂; Jìngkāng zhī luàn), was an episode of invasions and atrocities that took place in 1127 during the Jin–Song Wars when the troops of the Jurchen-led Jin dynasty besieged and sacked the imperial palaces in Bianjing (present-day Kaifeng), the capital of the Han-led Northern Song dynasty. The Jin forces captured the Northern Song ruler, Emperor Qinzong, along with his father, the retired Emperor Huizong, and many members of the imperial family of Emperor Taizong's bloodline and officials of the Song imperial court. The ordinary Song civilians of Bianjing living in the non-imperial quarter were left alone after being forced to pay huge ransoms to the Jin.

This event marked the collapse of the Northern Song dynasty that originally controlled most of China proper. Many members of the Song imperial family, most notably Zhao Gou (later Emperor Gaozong), managed to escape to southern China, where they reestablished the Song dynasty (known in historiography as the Southern Song dynasty) in the new capital, Lin'an (present-day Hangzhou). This event also greatly contributed to the return of the descendants of Emperor Taizu to the line of succession, as most of Emperor Taizong's descendants were abducted; Emperor Gaozong himself failed to produce an heir as well. This event is known as the "Jingkang Incident" because it took place during the Jingkang era of the reign of Emperor Qinzong.