Kai Xian is 350 kilometer away from northwest ChongQing为什么不是Kai Xian is 350 kilometer northwest away from ChongQing？Kai Xian is 350 kilometer northwest away from ChongQing？也很顺前一个，northwest做形容词，后一个做副词两种都可以？语法是怎么规定的呢？能说具体点不？字典上，northwest两种用法都有，我感觉语感上，两种说法都顺。