No 4. Ren Zong, Zhu Gaozhi, 1425 -- 1426
Emperor Ming Dynasty

Emperor Ren (Zhu Gaozhi) only reigned for a year. He had hardly time to relax the strong political and administrative pressure his father Chengzu had imposed on the country for over twenty years. During his reign a period of lethargy set in and a retreat from the seas as well as from the land began.