Nicholas Kao Se Tseien

Nicholas Kao Se Tseien (; ; 15 January 1897 – 11 December 2007), was a Chinese Trappist priest in Hong Kong who was the oldest-living Catholic priest and also the oldest person ever to have had a cataract operation, according to the Guinness Book of World Records.

Biography Born in Foochow, Fukien province (now Fuzhou, Fujian province), one of four brothers, Kao studied law at Amoy University (now Xiamen University) and later converted to Catholicism aged 18 while attending a school run by Spanish Dominican friars. He was trained as a teacher and studied law at night, but he ultimately decided to become a priest.

His life spanned parts of three centuries, two Emperors of China, and ten papacies. He stated that in 1912 he voted for Sun Yat Sen as China's president. He lived a cloistered life, but regularly shared advice for a healthy and long life. He gave visitors a list of "Healthy Seven Nos": no smoking; no anger; no alcohol; no overeating; constant exercise; constant prayer; no rudeness. He was devoted to the Blessed Virgin Mary throughout his life — he would say the Rosary many times each day, and built six shrines to her in Taiwan, mainland China, Malaysia and Hong Kong. where he died peacefully in his sleep on the morning of 11 December 2007, aged 110 years and 330 days. His body was buried in the Monastery's private graveyard.