Powerful jiedushi eventually eclipsed the power of the central government; the jiedushi retained their powers and quickened the disintegration of the Tang Dynasty. (618-907)
2.Fanzhen (藩镇) a governmental system involving administration through regional governors (jiedushi). The term fanzhen literally means "buffer town", and refers to the system of settling troops in strategic locations along the empire's border areas, which during the Tang Dynasty came under the control of provincial military governors, or jiedushi. As control of these fanzhen devolved from central authority into the hands of the local leaders, they at times became powerful enough to threaten the imperial Chinese central government during the Tang Dynasty, particularly during and after the An Shi Rebellion
3.Yang Guifei (杨贵妃) the beloved consort of Emperor Xuanzong of Tang during his later years.
4.An Lushan (安禄山) rebelled against the Tang Dynasty in China.
He rose to prominence defending the northeastern border from the Khitan and other northern threats. He was also cunning and flattering, so he got the support of Xuanzong Emperor and Yang Guifei. The promotion of Yang Guozhong to Chancellor precipitated the catastrophic An Lushan Rebellion, which significantly weakened the Tang dynasty
5.Huang Chao (黄巢) the leader of the Huang Chao Rebellion, which weakened Tang dynasy, dissolved within a few decades after the rebellion, and the empire broke up into competing states of the Five Dynasties and Ten Kingdoms Period.
6. Wang Xianzhi a major agrarian rebel during the reign of Emperor Xizong of Tang, whose rebellion, while failing, along with those of his one-time allyHuang Chao, began a series of rebellions that led to Tang Dynasty's