Is Li Longji a good or bad emperor?

Li Longji (685-762), Emperor Xuanzong of the Tang Dynasty (the Great Sage of the Tang Dynasty and Emperor Mingxiao of the Ming Dynasty), Han nationality, also known as Emperor Ming of the Tang Dynasty, the third son of Emperor Ruizong Li Dan of the Tang Dynasty, and his mother was Empress Zhaocheng Dou (Concubine Dou De). Li Longji conspired with Princess Taiping to launch a coup, killed Queen Wei, and supported his father Li Dan to the throne and was established as the prince. In the first year of Yanhe (712), Shou Chan ascended the throne and changed the year to Kaiyuan. During the Kaiyuan period of Emperor Xuanzong of the Tang Dynasty, the society was stable, the politics were clear and clear, and the economy was unprecedentedly prosperous. The Tang Dynasty entered its heyday, and later generations called this period the Kaiyuan era. In the later period of Emperor Xuanzong of the Tang Dynasty, he was greedy for pleasure, favored and reused Li Linfu and other treacherous ministers, which finally led to the Anshi Rebellion and the decline of the Tang Dynasty. He reigned from 712 to 756 AD and reigned for 44 years. Posthumous title: Great Sage, Emperor Xiao of Ming Dynasty; Temple name: Xuanzong: Burial place: Tailing.

He was a wise king in his early years, but he became a coward in his later years, and he will not be able to survive in his later years