After a series of negotiations that embittered both sides , the Jurchens attacked Attack the Song dynasty in 1125 , dispatching Sending one army to Taiyuan and the other to Bianjing ( modern Kaifeng ) , the Song capital .

The Jurchens laid siege Besieging to Kaifeng in 1126 , but Qinzong negotiated Communication their retreat Escaping from the capital by agreeing Agree_or_refuse_to_act to a large annual indemnity .

The Jin resumed Process_start war and again besieged Besieging Kaifeng in 1127 .