lán / yán / zhī / jǐ / hé / pǔ / tōng / péng / you / bù / yī / yàng / guān / xì / gèng / qīn / mì

蓝颜知己和普通朋友不一样，关系更亲密。

A close male confidant is different from an ordinary friend; the relationship is closer.