ān lù shān / fā dòng / le / ān shǐ zhī luàn / táng cháo / yīn cǐ / yóu shèng zhuǎn shuāi

安禄山发动了安史之乱，唐朝因此由盛转衰。

An Lushan launched the An-Shi Rebellion, which caused the Tang Dynasty to decline from its peak.