He was the group's senior legal officer, Kim Yong-chul, the first insider to make such allegations.

他是这个集团的高级法律职员，金勇哲(Kim Yong - chul)，作出这种指控的第一个局内人。

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His father Kim Chul-gyu competed at the 1964 Tokyo Olympics and is credited with popularizing the sport in South Korea.

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There are also a number of high-profile Twitter users in Korea, from the president to pop star Kim Hee-chul.

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