But now the face of numerous first-tier cities domesticpopulation concentrated consumption complex place andinternational first-tier cities complex places far existexternal internal gap,Gao Haiyan emphasizes that"value density city complex basic core values -- by citydevelopment density to users". But now the face of numerous first-tier cities domesticpopulation concentrated consumption complex place andinternational first-tier cities complex places far existexternal internal gap,Gao Haiyan emphasizes that"value density city complex basic core values -- by citydevelopment density to users".