If you take the time to include a careful and informative video description, everyone will be able to learn more. For example, does the video title imply that the guqin Li Xiangting is using in this video was made during the Tang Dynasty? If so, what is this instrument's name and provenance?
"九霄环佩"(Jiuxiao Huanpe )It came from the Lei family who made guqin in Sichuan Province in the Tang Dynasty. Li Shimin's son Li Heng inherited the throne of the Tang Dynasty (known as Tang Suzong in history). When he succeeded to the throne, the guqin used in the ceremony was "Jiuxiao Huanpei"