Tei Fuku

, also known as Cheng Fu, was a Chinese scholar-official who served the kingdoms of Chūzan and the First Shō dynasty in what is today Okinawa.

Background Tei Fuku was born in Raozhou Prefecture (modern-day Shangrao), Jiangxi, with ancestral roots in Luoyang, Henan. According to his family genealogy, he was a descendant of the Song dynasty neo-Confucian philosopher Cheng Hao. During Satto's reign, Tei Fuku and fellow Chinese immigrant held the rank of Aji and served as for tribute missions to China.

Retirement In 1411 (the ninth year of the Yongle era), aged 81, Tei Fuku petitioned the Yongle Emperor for permission to retire and return to China. King Shō Hashi submitted a memorial on his behalf, praising his four decades of loyal service. The emperor approved the request, granting Tei Fuku the honorary title of Kokushō (国相) upon his retirement. He subsequently returned to his hometown of Raozhou. His position as Left Chōshi passed to Ō Mō, while Ō Mō's role as Kokushō was formally transferred at the same time.

Legacy Tei Fuku's descendants continued to serve as interpreters and diplomatic officials ( and ) in Ryukyu for several generations. When his line eventually died out, a man named Cheng Bingxian was ordered to adopt the Cheng surname and continue the lineage. The Confucian scholar Tei Junsoku (Cheng Shunze) was Cheng Bingxian's grandson.