In the World Atlas compiled and drew by the cartographic division of General Staff Department of the Vietnamese People's Army, there was such annotation written in Vietnamese as "Xisha Qundao (China)", and "Nansha Qundao (China)", indicating that they are belonging to China.
On September 9, the postal service administration of China Taiwan authorities set up a postal agency on Taiping Dao of Nansha Qundao, under the jurisdiction of Kaohsiung Post Office, and later of Taipei Post Office.
In the Columbia Lippincott Gazetteer of the World published by the United States, it was written that Nansha Qundao was "China's territory located on the South China Sea, part of the Guangdong Province."
On July 13, the South Vietnam regime issued an order to include Xisha Qundao into the Quang Nam Province, and a new administrative organization named "Định Hải Society" shall be established to take in charge of the jurisdiction of the whole Xisha Qundao.
In the New World Atlas published with the recommendation of Ohira Masayoshi, the Japanese Minister for Foreign Affairs, it was clearly indicated that Nansha Qundao was belonging to China.
The Worldmark Encyclopedia of the Nations published by the United States explicitly pointed out that the islands of the People's Republic of China "also includes the islands and cays on the South China Sea to the extent of 4ºN. These islands and cays include Dongsha Qundao (Pratas), Xisha Qundao (Paracel), Zhongsha Qundao and Nansha Qundao."
In the 5th map of the Atlas of Vietnam published by the State Bureau of Surveying and Mapping of Vietnam, the map of "Vietnam and South east Asia", there were annotations such as Dongsha Qundao (QUANDAODONG-SA), Xisha Qundao (QUANDAOTAY-SA) and Nansha Qundao (QUANDAONAM-SA) spelt in both Chinese and Vietnamese. And all the names therein used the transliteration of Chinese. In the 16th map, the "Map of Vietnam", the color of Xisha Qundao on the map is different from that of Vietnam. Instead, it was of the same color as China on the map.
In the 1:10000000 Asia Political Map (single wall map for teaching purpose) published by the Hanoi State Bureau of Surveying and Mapping of Vietnam, there was such annotation as "Q. D. TAY-SA (TRUNGQUCC)" for Xisha Qundao, which meant "Xisha Qundao (China)", indicating it was belonging to China.
On May 9, the Government of the Democratic Republic of Vietnam made a statement on the US Government's determination of the "combat zone" for the US army in Vietnam, pointing out that "US President Johnson has determined the whole Vietnam and the nearby sea area with a width of about 100 nautical miles beyond the Vietnamese coast, as well as a part of the territorial sea in Xisha Qundao belonging to the People's Republic of China as the combat zone for the US armed forces", "posing a direct threat to the security of the Democratic Republic of Vietnam and its neighboring country". The Vietnamese Government hereby once again explicitly recognized that Xisha Qundao was China's territory.
On page 311 of World Gazetteer published by Tokyo Bookstore of Japan, it was stated that Xisha Qundao was returned to China after the Second World War.
Taiwan authorities dispatched a detached squadron navy to Nanxi Jiao (Nanzi Dao), Beidong Jiao (Beizi Dao), Didu Dao (Zhongye Dao) and Nanyi Dao (Hongxiu Dao) to reestablish the boundary monument of China.
On July 28, Malaysia released the Continental Shelf Act, declaring its outer continental shelf to be the 200 meter isobaths or the exploitation depth allowed. And "diggings" were established in both eastern and western sea area of Malaysia, and rented to foreign companies for prospecting and developing.
In the map of "Asia" on page 102-103 of the World Atlas published by the Soviet Union, Dongsha Qundao, Xisha Qundao and Nanwei Dao were all spelt and written in Chinese. On page 105-106, there were annotations for Dongsha Qundao, Xisha Qundao and Nansha Qundao written in Chinese, which demonstrated that, Nanhai Zhudao was belonging to China.
Malaysia designated a digging of over 80 thousand square kilometers in the sea area of the South China Sea, including Nankang Ansha, Haining Jiao, Beikang Ansha and Zengmu Ansha of China's Nansha Qundao in it. And it was rented to the Sarawak Shell Company, a subsidiary of the US Shell Corporation for oil drilling.
On March 4, "the Administration Office of Xisha Qundao, Nansha Qundao and Zhongsha Qundao" was renamed "the Revolutionary Committee of Xisha Qundao, Nansha Qundao and Zhongsha Qundao of Guangdong Province."
On October 27, Malaysia and Indonesia signed the Agreement between Indonesia and Malaysia on the Demarcation of the Two Countries' Continental Shelves in Kuala Lumpur.