 The people of Chūzan also quickly adopted many elements of Chinese culture, and came to be recognized as "civilized", at least somewhat more so than earlier, by the Chinese.Hashi also oversaw the expansion and embellishment of Shuri Castle, and the placement of distance markers throughout the land, marking the distance to Shuri.Meanwhile, though Hokuzan, the neighboring polity to the north, held no advantages over Chūzan economically or in terms of political influence, Hashi viewed their capital city castle of Nakijin Castle as a threat militarily.