After the coalition troops of Tang and Shiragi conquered Kudara (Baekje) and Kokuri (Goguryeo) which were ancient kingdoms in Korea, Tang supported the restoration movement of Kudara which was then ruled by Shiragi, and Shiragi supported the movement in Tang-ruling Kokuri.
百済・高句麗は滅ぼされたが、唐は新羅支配下にある百済の復興運動を、新羅は唐支配下にある高句麗の復興運動を後押しした。