General Secretary of the Communist Party of China Central Committee and Chinese President Xi Jinping holds talks with Vietnamese President Vo Van Thuong in Hanoi on Dec 13, 2023. (FENG YONGBIN / CHINA DAILY)

BEIJING - Vietnam firmly upholds the one-China principle and opposes interference in China's internal affairs, Chinese Foreign Minister Wang Yi said on Thursday.

Wang, also a member of the Political Bureau of the Communist Party of China (CPC) Central Committee, made the remarks as Xi Jinping, general secretary of the CPC Central Committee and Chinese president, returned to China on Wednesday evening after paying a successful state visit to Vietnam.

Wang said Xi's state visit is the most significant political event in China-Vietnam relations this year, and has achieved tremendous success

General Secretary of the Communist Party of Vietnam Central Committee Nguyen Phu Trong and other Vietnamese leaders reiterated solemnly that the Vietnamese side firmly upholds the one-China principle, recognizes Taiwan as an inalienable part of the Chinese territory, supports China's cause of reunification, and firmly opposes separatist activities of "Taiwan independence" in any form, Wang said.

The Vietnamese leaders also said that issues related to Hong Kong, Xinjiang and Xizang are all China's internal affairs, and Vietnam opposes any force's interference in China's internal affairs, and hopes and also believes that China will maintain stability, development, and prosperity, Wang added.

He said Xi's state visit is the most significant political event in China-Vietnam relations this year, and has achieved tremendous success. The visit holds important historical significance, marking a new milestone in the relationship between the two parties and countries, he added.

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The Vietnamese side attached great importance to this visit and extended a warm reception of the highest level and unprecedented courtesy, Wang said, noting that Vietnamese Prime Minister Pham Minh Chinh and Chairman of the National Assembly of Vietnam Vuong Dinh Hue went to the airport to welcome and see off the Chinese delegation respectively.

Noting that this year marks the 15th anniversary of the comprehensive strategic cooperative partnership between China and Vietnam, Wang said the visit accomplished the third round of mutual visits between the general secretaries of the two parties in the new era and showcased the special friendship between China and Vietnam, as well as both sides' high regard for the ties between the two parties and countries.