Thio Thiam Tjong

Thio emerged as a community leader in the late 1920s, and played an important role in the Chung Hwa Congress of 1927, which led to the founding in 1928 of the political association Chung Hwa Hui (CHH).^[7][8] The influential group was later criticised by left-wing critics as the 'Packard Club', a supposed cipher for the interests of the colonial Chinese establishment, most notably the conglomerate Kian Gwan, owned by Thio's in-laws, the Oei family.^[8]

Thio sat on the central board of CHH under the elder statesman H. H. Kan and became president of the group's Semarang branch in the 1930s.^[7][8][2][3] From 1930 until 1934, he acted as chairman of the Siang Hwee, or Chinese Chamber of Commerce, of Semarang.^[2][3] He also served as a member of the Provincialen Raad van Midden-Java or the Provincial Council of Central Java.^[2][3]

Prior to the Japanese invasion of the Indies during World War II, Thio headed an anti-Japanese resistance group.^[2][3] For much of the Japanese occupation from 1943 until 1945, Thio was interned with other political leaders in Cimahi.^[2][3] He spent his time there learning Mandarin, and took on the informal role of leader of his fellow ethnic Chinese prisoners.^[2][3]

After Japan's defeat in World War II, Sukarno and Hatta unilaterally declared Indonesian independence on 17 August 1945, which was not recognised by the Dutch authorities or the victorious Allies.^[9][10] When the Dutch returned to the Indies in March 1946, Thio was appointed as Advisor in the Emergency Cabinet of the Netherlands Indies Civil Administration (NICA) under his personal friend, H. van Mook, Acting Governor-General of the Dutch East Indies.^[11][9][10] Despite Thio's close involvement in van Mook's vision of a federal Indonesia, he avoided overt criticisms of the unitary Republic of Indonesia, headed by Sukarno and Hatta.^[9][10]

In 1947, Thio married Goei Lee Ging, a fellow scion of the Cabang Atas as a direct descendant of Goei Poen Kong, Luitenant der Chinezen (1765–1806), and one with important connections.^[12][6] His parents-in-law were Goei Khek Ho and Oei Bok Nio, part of an earlier double marriage involving their sister and brother respectively, Goei Bing-nio and the powerful tycoon Oei Tiong Ham, Majoor der Chinezen.^[6] Thio's wife was, therefore, a niece by marriage of the deceased Majoor Oei Tiong Ham, and a first cousin of the latter's daughters, the international socialites and political wives Oei Tjong-lan and Oei Hui-lan, better known as Madame Wellington Koo.^[6]

In 1948, Thio became president of Persatoean Tionghoa (PT, Chinese Union), a Chinese-Indonesian community and political organisation that was created in 1948 towards the end of the Indonesian Revolution (1945–1949).^{[13][9][10][3]} The revolution was both a war of independence against NICA and an internal social revolution against the pro-Dutch established elite.^{[13][9][10][3]} PT, seen by many as a successor of the pre-war CHH, aimed to represent the political aspirations of the Chinese-Indonesian community at the conclusion of the revolution and the handover of power from NICA to the new Indonesian authorities.^[9][13][10] After Dutch recognition of Indonesian independence, PT was transformed in 1950 under Thio's presidency into Partai Demokrasi Tionghoa Indonesia (PDTI).^[13][9][10] Liem Koen Hian, founder of the left-wing, pre-revolutionary Partai Tionghoa Indonesia, dismissed PT and PDTI – as he had CHH – as elitist and unable to deal with native Indonesians.^[8][10] In post-colonial Indonesia, PDTI's association with CHH doomed the party, and Thio's background in the pre-revolutionary political establishment meant that he could not play a meaningful role in new politics of the post-revolutionary Republic of Indonesia.^{[8][9][13][10]}

Thio Thiam Tjong died in exile in the Netherlands on 22 September 1969, and left no children.^[2][3]

• Chung Hwa Hui
• Partai Demokrasi Tionghoa Indonesia
• Liem Koen Hian