In 755, when the Anshi Rebellion occurred and Tang was thrown into disorder, FUJIWARA no Nakamaro made preparations for a punitive war against Silla, based on Japan's strengthening relationship with Balhae (who posed a serious threat to Silla).
755年、安史の乱が起こり唐で混乱が生じると、新羅に脅威を抱く渤海との関係強化を背景に藤原仲麻呂は新羅への征討戦争を準備している。