 Complete the following phrase:  The relation between the Socialist Republic of Vietnam and the Peoples Republic of China and ,  are mostly negative. Despite their Sinospheric and socialist background, centuries of conquest by modern Chinas imperial predecessor have given Vietnam an entrenched suspicion of Chinese. Although the PRC assisted North Vietnam during the Vietnam War, relations between the two nations soured following Vietnams reunification in 1975. China invaded Vietnam in 1979, known as the 