Question: Which political party did the director of the official press agency of the People's Republic of China join?

Context paragraphs:
Sahara Press Service: Sahara Press Service (SPS) is the multi-lingual official press agency of the Sahrawi Arab Democratic Republic, the government in exile of the Western Sahara.  The agency mainly report government-related news and current Sahrawi affairs, both from the liberated territories, the occupied territories and the Sahrawi refugee camps in Tindouf, Algeria.

AsiaNews: AsiaNews is an official press agency of the Roman Catholic Pontifical Institute for Foreign Missions (PIME).  The editor-in-chief of AsiaNews is Father Bernardo Cervellera, a PIME missionary who also heads Agenzia Fides, the official news agency of the Vatican.  News from AsiaNews is republished by the Catholic press agencies MISNA and Zenit.  Originally available in the Italian language, the website has since expanded into English and Chinese in 2003 to enhance the "missionary aspect of our news agency".  AsiaNews's intended audience is Chinese university students, who it believes are "curi[ous] about Christianity" and may save China from being "a soulless market or... dictatorship".  It describes its presence as "urgent" because of what it calls the "empowerment" of atheism in Chinese schools and the "persecution" of Christians in China.  AsiaNews describes itself as "a great accomplishment in evangelization, which is the work of God" and as "bolster[ing] the [Roman Catholic] Church's mission in China".  The investing portal of the Taipan Publishing Group has characterized AsiaNews an "obscure Vatican-sponsored news website" and as an "anti-communist organ of the Roman Catholic Church" whose "missionary zeal is not difficult to detect".

Imprensa Nacional: Imprensa Nacional (Portuguese for "National Press") is an institution of the Brazilian Government responsible for publishing both Diário Oficial da União and Diário da Justiça and for maintaining both the National Press Museum and the National Press Library.  It was created as "Impressão Régia" ("Royal Printing") by John VI of Portugal while Brazil was still a Portuguese colony.  It served as official press of the United Kingdom of Portugal, Brazil and the Algarves when the Portuguese court moved to Brazil.  After Peter I declared the independence of Brazil, it became the official press of the newly formed Brazilian Government and kept its status after Brazil became a republic.

Agence Bénin Presse: Agence Bénin Presse (ABP) is the official press agency of the government of Benin.

Chechenpress: State News Agency Chechenpress (SNA Chechenpress) is the news agency of the Chechen separatists who proclaim themselves to be the representatives of the Chechen Republic of Ichkeria.  It used to be the official press agency of Chechnya.

Liao Chengzhi: Liao Chengzhi (; 25 September 1908 – 10 June 1983) was a Chinese politician.  He joined the Communist Party of China in 1928, and rose to the position of director of the Xinhua News Agency; after 1949, he worked in various positions related to foreign affairs, most prominently president of the Beijing Foreign Languages Institute, president of the Sino-Japanese Friendship Society, and Minister of the Office of Overseas Chinese Affairs.

Namibia Press Agency: The Namibia Press Agency (NAMPA) is the national news agency of the Republic of Namibia.  It was founded in 1987 under the name Namibia Press Association as a SWAPO partisan press agency, and resuscitated after independence under its current name in 1991.  Its operation is regulated by the Namibia Press Agency Act of 1992.  The state owned agency is responsible for news distribution and picture services to local and international customers.  Up until now, the agency offers text and picture services, but no audio or video material.  About 20 journalists and 30 other staff members work for NAMPA.  Aside from its Windhoek headquarters, the agency has offices in Swakopmund, Gobabis, Ongwediva/Oshakati, Opuwo and Rundu.  Most media in Namibia rely on the services of NAMPA, especially for international news.

Angola Press News Agency: Angola Press News Agency, or Angola Press Agency (Portuguese: "Agência Angola Press" , ANGOP) is the official news agency of the state of Angola, based in Luanda.  Founded in 1975, it was a former close ally of the now-defunct official news agency of the Soviet Union, the Telegraph Agency of the Soviet Union (TASS).  It is part of the .

Slovenian Press Agency: Slovenian Press Agency (Slovene: "Slovenska tiskovna agencija" ) (STA), established in 1991, is a national press agency covering domestic and international events.  It was established and is owned by the Republic of Slovenia.

Xinhua News Agency: The Xinhua News Agency (English pronunciation: ) is the official press agency of the People's Republic of China.  Xinhua is the biggest and most influential media organization in China.  Xinhua is a ministry-level institution subordinate to the Chinese central government.  Its president is a member of the Central Committee of China's Communist Party.

Supporting paragraphs: Liao Chengzhi Xinhua News Agency
Answer: the Communist Party of China