zài / shànghǎi / wèn / lù / de / shíhòu / biéren / shuō / dà guǎi / jiù / shì / yào / nǐ / wǎng / zuǒ / zhuǎn

在上海问路的时候，别人说大拐就是要你往左转。

When asking for directions in Shanghai, if someone says 'dà guǎi', it means you should turn left.