During the 1960s and 1970s, Chinese nationalism within mainland China became mixed with the rhetoric of Marxism, and nationalistic rhetoric become in large part subsumed into internationalist rhetoric. On the other hand, Chinese nationalism in Taiwan was primarily about preserving the ideals and lineage of Sun Yat-sen, the party he founded, the Kuomintang (KMT), and anti-Communism. While the definition of Chinese nationalism differed in the Republic of China (ROC) and the People's Republic of China (PRC), both are adamant in claiming Chinese territories such as the Senkaku (Diaoyutai) Islands and the Nine-dash line in the South China Sea.