Yan Zhen, a famous writer, is now a professor of Zhong Nan University.

阎真，著名作家，现为中南大学教授。

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In the tranquil Yan Nan Yuan, there are such a group of creatures, who are strolling marginalized by the society, but enjoying their free and unbounded life.

静谧的燕南园里，有着这样一群游走在生活边缘却又怡然自得的生命。

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But Yan Nan Zhi an of Yuan Dynasty of "sing the theory" is the first more concentrated treatise vocal music theories and sing the method particularly literature.

但元朝燕南芝庵的《唱论》却是第一部较为集中的论述声乐理论及歌唱方法的专著。

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