▁pre cious ▁cultural ▁re lic s , ▁ ▁it ▁displays ▁the ▁painted ▁pot tery ▁civil ization ▁represented ▁by ▁the ▁cultural ▁pot tery ▁of ▁Maj i ay ao . ▁G ans u ▁Science ▁and ▁Technology ▁Museum ▁() ▁sound , ▁light , ▁electric ity ▁and ▁other ▁high - tech ▁means ▁will ▁be ▁fully ▁adopted , ▁and ▁the ▁way ▁of ▁teaching ▁and ▁learning ▁will ▁enable ▁visitors ▁to ▁em brace ▁modern ▁science ▁in ▁a ▁pleasant ▁atmosphere . ▁ ▁Econom y ▁ ▁Product ivity ▁Since ▁ 1 9 4 9 ▁L anz hou ▁has ▁been ▁transformed ▁from ▁the ▁capital ▁of ▁a ▁pover ty - str icken ▁province ▁into ▁the ▁center ▁of ▁a ▁major ▁industrial ▁area . ▁ ▁The ▁G DP ▁per ▁cap ita ▁of ▁L anz hou ▁was ▁ 2 5 , 5 6 6 ▁( R MB ) ▁( US $ 3 , 6 8 1 ) ▁in ▁ 2 0 0 8 , ▁ranking ▁it ▁at ▁number ▁ 1 3 4 ▁among ▁ 6 5 9 ▁Chinese ▁cities . ▁In ▁ 2 0 1 5 , ▁the ▁G DP ▁per ▁cap ita ▁had ▁grown ▁to ▁ 5 7 , 1 9 1 ▁R MB ▁( US $ 9 1 8 2 . 2 8 ) ▁and ▁the ▁city ▁ranked ▁at ▁place ▁ 1 0 0 ▁for ▁total ▁G DP ▁of ▁Chinese ▁cities . ▁ ▁Institution s ▁The ▁International ▁Sol ar ▁Energy ▁Center ▁( UN ID O - I SE C ) ▁is ▁located ▁in ▁L anz hou ' s ▁Ch eng gu an ▁district . ▁