yǔyán jiāohuàn

== Mandarin == === Romanization === yǔyán jiāohuàn (Zhuyin ㄩˇ ㄧㄢˊ ㄐㄧㄠ ㄏㄨㄢˋ) Hanyu Pinyin reading of 言語交換 / 言语交换