After a successful alliance with the Jin in which the Song destroyed its old enemy the Khitan , the Jin attacked the Song and sacked its capital in Kaifeng .
The prosperity of the Song was interrupted by the invasion of Jur'chen Jin in 1127 .
After a successful alliance with the Jin in which the Song destroyed Song 's old enemy the Khitan , the Jin attacked Song Song and sacked its capital in Kaifeng .
The prosperity of the Song was interrupted by the invasion of Jur'chen Jin in 1127 .