Ben shu jie shao le ba ji tian de ying yong li shi, yao yong jia zhi, zi yuan bian hua he jing ji yi yi, sheng wu xue te xing, zai pei ji shu, ba ji tian zai wo guo de zi ran fen bu gui lü, zai pei guo cheng zhong ying zhu yi de wen ti deng.