Kun chong xue:dong wu sheng tai xue Nong ye- kun chong xue:dong wu sheng tai xue Jia can- dong wu sheng tai xue Xing zheng xue:sheng tai xue Kun chong sheng tai xue/ Dong wu sheng tai xue Nong lin kun chong sheng tai xue/ Zhong zi— zhi wu sheng li xue Kun chong bing du fen zi sheng wu xue/ Yun dong sheng li xue