Phoa was born in Buitenzorg, DutchEast Indies, in 1857 into an influential PeranakanChinese family, part of the Cabang Atas or the Chinese gentry of colonial Indonesia. His father, Phoa Tjeng Tjoan, held the post of Kapitein der Chinezen of Buitenzorg. This was a civil government position in the Dutch colonial administration with legal and political jurisdiction over the local Chinese community. As the son of a Chinese officer, the younger Phoa held the hereditary title of Sia. His great-nephew, Phoa Liong Gie, would later attain prominence as a jurist, politician and newspaper owner. Phoa's earliest formal education was in a school run by ethnic Chinese, but after Sierk Coolsma opened a missionary school in Bogor on 31 May 1869, Phoa was in the first class of ten. Among his classmates was Lie Kim Hok, who would later become known as a writer. At this school Phoa studied, among other subjects, Dutch. Although the school was meant to convert people to Christianity, Phoa remained well-versed in Confucianism. After graduating Phoa married the daughter of a Chinese lieutenant in Batavia, the capital of the Indies, and he moved there to be with his wife. The couple had a daughter, Tji Nio, who later married Majoor Khouw Kim An, last titular head of the Chinese community of Batavia. Phoa proved very outspoken and soon he was a viewed as a leader of Batavia's Chinese. Because he had a command of Dutch, used by the colonial forces, Phoa was able to easily interact outside of Chinese and native groups. In 1900 Phoa, together with his former classmate Lie, was an establishing member of the Tiong Hoa Hwe Koan school system and social organisation. He served as the president of THHK for twenty-three years before retiring, and was assisted by his son-in-law's cousin, the philanthropistOen Giok Khouw, as vice-president. The organisation promoted rights for ethnic Chinese and the use of Chinese and English amongst ethnic Chinese. In 1907, Phoa – under the pseudonym "Hoa Djien" – used a series of letters to the editor of the daily Perniagaan to criticise the Dutch colonial government and its policies towards the ethnic Chinese. He wrote that the Indies offered little opportunity to ethnic Chinese, who should instead look abroad. He wrote "if they are literate in Chinese and English, they can just take a two- or three-day voyage into a wider world where they can move freely." Outside of the THHK, Phoa was an active landlord. He bought some land in Bekasi, south-east of Batavia, and in 1903 succeeded in banning gambling in the area. As did his father before him, Phoa sold agricultural products. He owned a rice mill and tea factory. Phoa was invested as a Knight of the Order of Orange-Nassau in 1937. He died in Batavia later that year, on 19 July, and was buried after a large funeral at Petamburan Cemetery on 25 July. As he had no male issue, one of his daughter's sons, Phoa Liong Djin, assumed his surname and succeeded him as head of the family.
