唐宪宗、穆宗时期,吐蕃在经过德宗贞元年间唐朝、回鹘、南诏的联合抗击之后,国势渐衰,已不能再对唐朝构成严重的威胁,至穆宗长庆初年,最终与唐朝举行了罢战言和的长庆会盟。而唐、蕃关系的改善,又为唐朝剪除关东叛镇、重树中央权威创造了相对稳定的边疆局势。 During the Tang Xianzong and Muzong periods, after the united defeat of the Tang, Hui and Nanzhao in Dezuzhen in the first year of Emperor Dezong, the decline of the country’s strength no longer posed a serious threat to the Tang Dynasty. North Korea held a farewell to the Evergreen Alliance. The improvement of the relations between Tang and Fan also created a relatively stable frontier situation for the Tang Dynasty to cut off the renegade town of Kanto and reinvigorated the central authority.