gǔ / dài / chéng / shì / lǐ / de / gōu / lán / cháng / cháng / jiān / yǒu / biǎo / yǎn / hé / yú / lè / de / gōng / néng古代城市里的勾栏常常兼有表演和娱乐的功能。Goulan in ancient cities often served both performance and entertainment functions.