[8] Seven Quinnamese and three Javanese were involved in a gold hunting expedition along with 200 Chinese and 218 troops under Serior Merchant Cornelis Caesar from November 1645 to January 1646.

[11] Following World War II, under a United Nations Mandate, 200,000 Chinese troops under General Lu Han were sent by Chiang Kai-shek to Indochina north of the 16th parallel, with the aim of accepting the surrender of Japanese occupying forces.

[14][15][16][17] South Vietnam, while it existed, had official diplomatic relations with the Republic of China (which the regime was driven in 1949 to Taiwan, the island formerly under Japanese rule from 1895 to 1945) due to the two countries' common anti-communist policies.

[20] The Chinese Republic sought to provide southeast Asian countries with its own hard-earned and bitter expertise in anti-communist affairs, and South Vietnam was a major recipient of these lessons.

[26] In 2015, Taiwanese legislator Chung Chia-pin of the Democratic Progressive Party, whose constituency in Pingtung is home to Vietnamese expatriates in Taiwan, founded a Taiwan-Vietnam parliamentary friendship association.

[27] In 2006, Taiwan Semiconductor Manufacturing Company chairman Morris Chang flew to Hanoi as a special representative of then-President Chen Shui-bian to the Asia-Pacific Economic Cooperation forum.

The aircraft, which displays the flag of the Republic of China and its national emblem, had never before been permitted to land on the soil of a country with which Taiwan lacked formal relations.

[28] Foreign direct investment is an important policy tool of Taiwan; as Samuel Ku argues, Taipei uses "the island's economic resources in exchange for political gains from Vietnam".