▁submitted ▁to ▁him . ▁ ▁From ▁the ▁ 1 st ▁century ▁AD ▁on wards , ▁official ▁Chinese ▁historical ▁texts ▁contained ▁a ▁ge ographical ▁section ▁( D il iji ▁ 地 理 <0xE7> <0xBA> <0xAA> ), ▁which ▁was ▁often ▁an ▁enorm ous ▁compilation ▁of ▁changes ▁in ▁place - names ▁and ▁local ▁administrative ▁divisions ▁controlled ▁by ▁the ▁r uling ▁dynast y , ▁descri ptions ▁of ▁mountain ▁ranges , ▁river ▁systems , ▁tax able ▁products , ▁etc . ▁From ▁the ▁ 5 th ▁century ▁BC ▁Sh u ▁J ing ▁forward , ▁Chinese ▁ge ographical ▁writing ▁provided ▁more ▁concrete ▁information ▁and ▁less ▁legend ary ▁element . ▁This ▁example ▁can ▁be ▁seen ▁in ▁the ▁ 4 th ▁chapter ▁of ▁the ▁Hu ain an zi ▁( Book ▁of ▁the ▁Master ▁of ▁Hu ain an ), ▁compiled ▁under ▁the ▁editor ship ▁of ▁Prince ▁Li u ▁An ▁in ▁ 1 3 9 ▁BC ▁during ▁the ▁Han ▁D ynast y ▁( 2 0 2 ▁BC – 2 0 2 ▁AD ). ▁The ▁chapter ▁gave ▁general ▁descri ptions ▁of ▁top ography ▁in ▁a ▁system atic ▁fashion , ▁given ▁visual ▁a ids ▁by ▁the ▁use ▁of ▁maps ▁( di ▁tu ) ▁due ▁to ▁the ▁efforts ▁of ▁Li u ▁An ▁and ▁his ▁associate ▁Zu o ▁Wu . ▁In ▁Ch ang ▁Ch u ' s ▁H ua ▁Yang ▁Gu o ▁Chi ▁( H istor ical ▁Geography ▁of ▁S zech uan ) ▁of ▁ 3 4 7 , ▁not ▁only ▁rivers , ▁trade ▁routes , ▁and ▁various ▁tribes ▁were ▁described , ▁but ▁it ▁also ▁wrote ▁of ▁a