Later, in Zhou Dynasty, King Wen of Zhou added a sixth string for his son.

后来到了周朝，周文王为儿子加了第六弦。

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In the Zhou dynasty, King Wen of Zhou added a sixth string for his son King Wu of Zhou to encourage his army to fight with the Shang.

周文王为他的儿子周武王增加了第六根琴弦，鼓励他的军队与商朝作战。

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King Wu of Zhou, added a seventh string to encourage his army to fight with the Shang.

周武王增加了第七根弦，以鼓励他的军队与商朝作战。

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Zhou Changchun says he has tried for years to get on the CCTV broadcast as the "king of bike" -- a title he claims for his ability to do bicycle tricks while clad in a colorful superhero-style outfit.

WSJ: Imitation Is the Sincerest Form of Rebellion in China