公元1115年,金兵攻占辽国重镇黄龙府,随后又与宋朝订立“海上之盟”,共同攻辽。
In 1115 Jin captured Huang Longfu , an important city of Liao . At the same time , Jin reached an agreement with Song , namely the " Haishang Agreement " to form a joint force to fight against Liao .