太上皇

Taishang Huang / Retired Emperor / father of the reigning emperor / fig. puppet master

highest / greatest / too (much) / very / extremely

title of respect for taoists

used in 上聲|上声[shang3 sheng1]

(bound form) up; upper; above; previous / first (of multiple parts) / to climb; to get onto; to go up / to attend (class or university) / (directional complement) up / (noun suffix) on; above

emperor / old variant of 惶[huang2]