In 2003, the two countries signed the treaty on good-neighborliness, friendship and cooperation, which fixed the relations between the two countries in the form of a legal document.

中吉两国在2003年签署了睦邻友好合作条约，这一条约把两国关系用法律文件的形式固定下来。

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In November 1978 Vietnam signed a treaty of friendship and cooperation with the Soviet Union.

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