Tumen Rivers; this agreement primarily stipulated that three-fifths of Heaven Lake at the peak of Mt. Baekdu would go to North Korea, and two-fifths to China. However, the boundary between North Korea and the People's Republic of China continued to be contested, in spite of the 1963 agreement. In response to North Korea's perceived lack of support in the Sino-Soviet split, China demanded that North Korea cede its portion of the peak of Mt. Baekdu to China, and between March 1968 and March 1969, a number of border clashes between North Korean forces and Chinese forces took place in the Mt. Baekdu region. PR China wanted to restore the Gando Convention boundary. Chinese demands for the rest of Mt. Baekdu were eventually dropped in 1970 in order to repair relations between North Korea and China. China has recognized North Korea's sovereignty over some 80% of the islands in the Yalu/Amnok and Tumen Rivers, and also accepted North Korea's control of some 90% of the mouth of the Yalu/Amnok River. While not openly discussed anymore, it would appear that the 1963 agreement is only something of a framework and not exactly a binding contract for either North Korea or China. South Korea did not recognize these agreements, but did not made a serious attempt to assert Korean sovereignty on Gando either. South Korea did not officially renounce its claim on Gando, but the Sino-Korean boundary on South Korean national map loosely follows the 1961 line except for Mt. Baekdu, and largely accepts this boundary on the map as de facto boundary. In 2004, the South Korean government issued the following statement: "Our government takes the position that the 1909 Gando Convention, signed by Japan illegally without Korea's consent, is null and void, to the extent that the Eulsa Treaty, which deprived Korea of its diplomatic rights in 1905, is a null-and-void treaty obtained through duress." On October 22, 2004, South Korean foreign affairs minister Ban Ki-moon also remarked on the voiding of the Gando Convention. Ban also stated that "nullity of the Gando Convention does not automatically resolve Gando dispute and international politics harden our attempt to resolve Gando dispute" References History of Manchuria 1909 in China 1909 in Japan 1909 in Korea Treaties concluded in 1909 Treaties of the Qing dynasty Treaties of the Empire of Japan