Final answer:
The name of the Grand Secretary of the Earth King is not provided in the reference material, though examples from similar historical contexts involve high-level officials responsible for advising on state affairs and overseeing administrative tasks at the royal court.
Step-by-step explanation:
The name of the Grand Secretary of the Earth King is not explicitly stated in the provided reference information. However, similar positions in historical East Asian courts, particularly within the context of Chinese-influenced bureaucratic systems, were commonly filled by high-level officials who were deeply involved in the administrative affairs of the state. For instance, the duties of such officials could range from advising the king on state affairs, as demonstrated in the conversations between kings and their counsellors and other officers, to overseeing ceremonies, a task which might be entrusted to the Ministry of Rites.
Such historical narratives offer insight into the workings of royal courts, such as the story of Hong Pansa, who is mentioned as approaching the king to be confirmed in his rank, or the tale of the king who decides his subjects' controversies with the aid of counsellors and officers like secretaries and treasurers. We also learn about the emperor's personal involvement in diplomatic and ceremonial matters such as issuing imperial orders, conferring titles, and rewarding tribute envoys, highlighting the intricate structure of a monarch's court and the various roles within it.
Given the detail of historical records and the specific roles mentioned, one could assume that a Grand Secretary would be a figure similar to the senior officers, counsellors, or officials found in these records, but without a concrete mention, we cannot be sure of this title's holder or duties.