Although Tang rebuked Silla for having Anseung as the King of Goguryeo, Silla clearly showed its posture opposing to Tang over the domination of the former Baekje territory, and in 671, Silla wrested the former Baekje areas one after another starting with occupation of Sabi and establishment of 所夫里州 Prefecture.
安勝を高句麗王に封じたことで唐からは叱責されたが、新羅は却って旧百済領域の支配をめぐって唐との対抗姿勢を明確にし、671年には泗沘の占領と所夫里州の設置を初めとして、次々に旧百済領域を奪取していった。