Gong cheng li xue=: Statics = jing li xue/ Gong cheng li xue=: Dynamics = dong li xue/ Gong cheng li xue wen ti xiang jie=: Jing li xue/ Gong cheng li xue wen ti xiang jie=: Dong li xue/ Gong cheng fei ping heng re dong li xue/ Gong cheng liu ti li xue/ Zong tong si xiang yu song ming li xue/ Gong cheng li xue jian ming jiao cheng/