Dr James Fox explores how, in the hands of artists, the colours gold, blue and white have stirred our emotions, changed the way we behave and even altered the course of history.九转化血膏的出现，让他明白，各种药材的重要性，要不然你就(jiù )放(⛏)了一(yī )个天(💔)材地宝在他眼前(qián )，他(🌅)不(bú )认识也没法得到(❌)。