Is Zuo nave an official name or a private name?

Coincidentally, "the name carries the official position." Tang Zong is the name, and the main hall is the official position (another name, elegant name or honorific title of the cabinet university in the heyday of the Qing Dynasty). The ancients were very particular, and it was disrespectful to call people by their first names. Because of nave's homonym, there is a second-class marquis on the left, and his colleagues call him "Jacky", "Zuo Hou Xiang" and "Jue Shuai".