Following the break of official relations between the United States and the ROC in 1979, the ROC government under Chiang Ching-kuo maintained a "Three Noes" policy in regards to communicating with the Chinese government. This policy however was revised following the May 1986 hijacking of a China Airlines cargo plane, in which the Taiwanese pilot subdued other members of the crew and flew the plane to Guangzhou. In response, Chiang sent delegates to Hong Kong to discuss with PRC officials for the return of the plane and crew, which is seen as a turning point between cross-strait relations.