In January, China established diplomatic relations with the United States. Comrade Deng Xiaoping visited the United States and held talks with President Carter. In February, Chinese frontier troops launched a counterattack against Vietnamese aggressors in the Guangxi and Yunnan frontier zones and won great victories. In April, with the goal of four modernizations of our country in mind, Deng Xiaoping enumerated the four cardinal principles: keeping to the socialist road, upholding the proletarian dictatorship, upholding the leadership of the Communist Party, and upholding Marxism-Leninism and Mao Zedong thought. The CPC Central Committee and the State Council ratified four special economic zones in Guangdong and Fujian. At the celebration of the thirtieth anniversary of the founding of the People’s Republic of China, Comrade Ye Jianying recalled the great achievements of the Chinese Party and people since liberation in 1949 and presented a self-criticism of the Party’s mistakes during the Cultural Revolution.