Question: Who is Chatan Chōai's paternal grandfather?
Sentence (from "Shō Shitsu"): The king's eldest son, Shō Tei, who would later succeed him as king, journeyed to Beijing and submitted the formal royal seal given the kingdom by the Ming rulers, to the Qing Court, which in turn granted the prince a new royal seal for the kingdom and declared its official recognition of Shō Shitsu as king.
Relevant evidence: No