Left Flank

Muninn has a remarkable essay on Taiwanese sentiment concerning Koreans and Korean cuisine. It's all the more pleasant a read for the fact that it ends on a distinctly positive note.

All being said, however, I was a bit surprised to find anything more
than, at worst, indifference towards Korea. Instead, I might have
expected a feeling of camaraderie for an economically successful and
culturally rich counterpart that is similarly struggling to define
itself in a challenging geopolitical environment dominated by its
larger neighbors.

This sense of camaraderie is further defined by war, in this case the Korean War, as William Stueck argues in The Korean War: An International History.

Mao could return to conditions of the prewar world, and nowhere was this more apparent than in regard to Taiwan and the offshore islands. On the eve of war, the United States showed no interest in the latter and refused to commit itself to defend the former. When the war began, the United States quickly jumped in to protect taiwan from Communist attack. When the PRC intervened in Korea, virtually all prospects disappeared that this new US policy would change for the foreseeable future
In the aftermath of war, the PRC probed Nationalist positions of the offshore islands of Jimmen and Matsu only to spark threats from Washington of nuclear retaliation and a formal US commitment to the Ntionalists to defend Taiwan.The Soviets proved of little help in this crisis. I the final unification of China was far from inevitable in June 1950, the country's indefinite division had become reality by July 1953. China's adoption of the role of mediator in Indochina in the summer of 1954 and its subsequent retreat on the offshore islands reflected the conclusion in Beijing that it could not afford another military clash with the United States-at least not if given a choice. In 1955 Chinese leaders tried the diplomatic approach by initiating «ambassadorial talks» with the United States at Geneva, but the Americans proved unbending on Taiwan. Even if we ignore the PRC's inability to eject UN forces from Korea, the new China's struggle on the peninsula had a bittersweet quality.» (pp. 364-5)

Obviously, the ironic twists of history do not make for love between peoples. And, the differences between Chinese and Japanese culture make for even more differences in the countries trying to deal with the two heavyweights' rivalry.