Ruling party leaders from the Democratic People's Republic of Korea (DPRK), Vietnam, Laos and Cuba have congratulated Xi Jinping on his election as general secretary of the Central Committee of the Communist Party of China (CPC).

Kim Jong Un, first secretary of the Workers' Party of Korea and first chairman of the National Defense Commission of the DPRK, on Thursday sent a congratulatory message to Xi.

Kim extended warm congratulations on the successful holding of its 18th CPC National Congress and the election of Xi as general secretary of the CPC Central Committee and chairman of the CPC Central Military Commission.

"It is an expression of deep trust and great expectation of all the party members, service personnel and people of China that you take the important posts as general secretary of the CPC and chairman of the Central Military Commission of the CPC at a time when the cause of the socialist modernization drive of the Chinese people has entered into a new stage," the top DPRK leader said.

The 18th National Congress of the CPC marked a historic occasion as it reviewed the theoretical and practical experience and successes gained by the CPC and the Chinese people in the course of socialist construction and provided a new milestone for hastening the construction of socialism with Chinese characteristics, Kim said.

"It is my conviction that the fraternal Chinese people will surely achieve the strategic goal to build a comprehensively well-off socialist society by keeping the stability of society and sustainable economic development and improving the people's living standard under the leadership of the CPC with you as general secretary," Kim said.

"The DPRK and China are friendly neighbors linked by the same mountain and rivers and the DPRK-China friendship with long historic roots is the common precious wealth associated with the wisdom and efforts of the leaders of the elder generation of the two parties and two countries," he said.

"Believing that the traditional DPRK-China friendship which has developed down through generations will continue to grow in conformity with the wishes of the two peoples, I sincerely wish you great success in your responsible work," Kim added.

General Secretary of the Communist Party of Vietnam Central Committee Nguyen Phu Trong said in a congratulatory letter he was glad to hear Xi was elected general secretary. Trong extended his warmest congratulations on behalf of the Communist Party of Vietnam Central Committee.

He said the 18th National Congress of the CPC had been a complete success. The Chinese people would realize all the tasks and goals raised at the congress and constantly make greater achievements under the leadership of the CPC headed by Xi.

In recent years, the traditional friendship and the comprehensive relations of strategic cooperation and partnership between Vietnam and China had been continuously consolidating and developing, which had brought tangible benefits to both peoples and contributed to promoting peace, stability, cooperation and development of the region and the world, he said.

Trong spoke highly of the contributions Xi had made to promote relations between the two parties and countries, adding he believed Xi would make greater contributions on uplifting bilateral relations to a new high in the position of great responsibility.

Choummaly Sayasone, general secretary of the Lao People's Revolutionary Party, also extended his warm congratulations and good wishes on behalf of the Central Committee of the Lao's People's Revolutionary Party.

He said electing Xi as the top leader of the CPC sufficiently embodied a high degree of trust by both the CPC and the Chinese people in Xi's rich experience in leadership over the past many years.

He said, under the leadership of Xi and guided by the Deng Xiaoping Theory, the Three Represents and the Notion of Scientific Development, the Chinese people would realize all the tasks and goals raised at the congress and contribute to promoting peace, stability, cooperation and development of the region and the world.

He also hoped the friendship between the two parties, countries and peoples would last forever and the Lao-China comprehensive strategic cooperation and partnership would constantly gain fruitful achievements.

Raul Castro Ruz, first secretary of the Central Committee of the Communist Party of Cuba, said: "On behalf of the Communist Party of Cuba and our people, I congratulate you on your election as general secretary of the Central Committee of the Communist Party of China

"I wish you success in your new assignment and I reiterate the decision to further strengthen the brotherly relations between our respective parties, governments and peoples," he said.