To avoid interfering by work, data were sampled through a multi-layers network which synthesize the field-bus and Ethernet and center on programmable logic controller.

为了排除人为干扰、提高可靠性，采集数据以可编程逻辑控制器为核心，通过现场总线和以太网的多层网络传送至数据库中。

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"This is a common phenomenon, and it's definitely a field for anticorruption work, " says Li Chengyan, director of Peking University's Research Center for Government Integrity.

WSJ: Chinese Officials Ousted Over Alleged Sexual Exploits