For the accurate and detailed information, the author does the investigation in Qianguo four times, collecting a large number of first-hand information, and accessing to many local internal documents.

为得到准确而又详实的资料，笔者前后四次到前郭尔罗斯蒙古族自治县调研，搜集了大量的一手资料，并且查阅了很多当地的内部文件。

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