49 years ago today, February 6, 1976 (January 7, 1976 in the lunar calendar), the Lockheed bribery case in Japan was exposed and former Prime Minister Kakuei Tanaka was sentenced. Former Prime Minister Kakuei Tanaka was sentenced to four years in prison. On February 6, 1976, according to information provided by the Multinational Enterprises Subcommittee of the U.S. Senate Foreign Affairs Committee, the Socialist Party of Japan and other opposition parties began to investigate the U.S. Lockheed Company for bribing Japanese politicians in order to sell aircraft at the House Budget Committee. The failure of the case was revealed. Prime Minister Takeo Miki immediately stated that the case should be thoroughly investigated. On February 24, the Tokyo District Inspection Office, the Metropolitan Police Department, and the Internal Revenue Bureau jointly conducted an investigation and search. In March, the U.S. government provided relevant testimony information. In May, the Senate and House of Representatives successively established a Special Investigation Committee on Lockheed Issues. In July, former Prime Minister Kakuei Tanaka was arrested for violating the Foreign Exchange and Foreign Trade Management Law. In August, he was charged with violating the Foreign Exchange Management Law and accepting bribes of 500 million yen. The reason for the prosecution was: During Tanaka's visit to the United States in 1972, he used his power to accept a bribe of 500 million yen from Lockheed in exchange for purchasing a number of aircraft such as the company's large "aircars", transport aircraft, main fighters and anti-submarine reconnaissance aircraft. The Tokyo District Court opened in November 1977. By the time the trial was completed in October 1983, 460 people, including members of Parliament, cabinet members, ANA, and Marubeni Company officials, were summoned for investigation, exposing the scandal of political circles accepting a large amount of foreign funds and manipulating politics behind the scenes. As a result, Tanaka was sentenced to 4 years in prison and a fine of 500 million yen was recovered. Other relevant personnel were also investigated.