Grand Governor

Needs All Under Heaven, and it's the full rags-to-robes arc: start landless, climb the exam ladder and the Merit ranks exactly as for Upper-upper, and then - the extra step - once you're at Merit Rank 1, boost your ministry candidacy score and wait for a Ministry appointment. A whole character lifetime of patient bureaucracy, possibly more. The wiki's own summary is literally "same as Upper-upper, plus the final step", so run them as one campaign along with Stamp of Approval and Flying Colors.