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BEIJING, May 19 (Xinhua) -- Chinese President Xi Jinping on Saturday sent condolences to Cuban and Mexican leaders respectively over an airliner crash in Cuba that caused more than 100 deaths.

Liu, just returned from the United states, referred to the talks as "positive, pragmatic, and productive" with some important consensuses reached.

Li Zhanshu, chairman of the National People's Congress (NPC) Standing Committee, said heroes and martyrs are the spine of the Chinese nation. Their deeds and spirits epitomize a key part of socialist core values.

Noting that this year marks the 40th anniversary of the signing of the China-Japan Treaty of Peace and Friendship, Cheng said the two neighbors are highly complementary in economy and closely connected in culture.

Wang said that people-to-people communication is the foundation to the bilateral relationship while leaders' guidance is the key, adding that the ever-developing Sino-Brazilian relationship has provided bilateral cooperation with new contents.