Zhou Yongkang, a senior official of the Communist Party of China (CPC), left here for home on Monday after concluding an official goodwill visit to the Democratic People's Republic of Korea (DPRK). Zhou, a member of the Standing Committee of the Political Bureau of the CPC Central Committee, was seen off at the airport by Kim Ki Nam and Choe Thae Bok, both members of the Political Bureau of the Central Committee of the Workers' Party of Korea (WPK). Also present at the airport were Kim Yong Il, an alternate member of the Political Bureau of the WPK Central Committee and secretary of the Secretariat and director of the International Affairs Department, and other senior DPRK officials. During his three-day stay in the DPRK, Zhou met with DPRK's top leader Kim Jong Il, Kim Yong Nam, president of the Presidium of the Supreme People's Assembly, observed a grand military parade and attended other activities to celebrate the 65th birthday of the ruling WPK. Zhou also met with the staff of the Chinese embassy, and representatives of Chinese institutions, Chinese nationals residing in the DPRK and students studying in the country, calling on them to make fresh contributions to the development of China-DPRK relations. 