Pardon him, because he is dugu kuaile.

原谅他，因为他是独孤快乐。

KUAILE HANYU consists of six books with three levels, with both a student's book, teacher's book, flash cards, wall map and listening materials at each level.

全套教材共六本，分为三个等级，每个等级有学生用书和配套的教师用书、词语卡片、挂图、听力材料等。

Kuaile Hanyu (English Version) is a set of Chinese teaching materials specially compiled for middle school students aged 11 to 16 whose mother tongue is English.

《快乐汉语》是专为以英语为母语的中学生编写的汉语入门教材，也可供以英语为母语的11-16岁的青少年汉语学习者使用。

There are three volumes of Teacher's Books for Kuaile Hanyu and they are used in conjunction with the Student's Books.

《快乐汉语》教师用书共3册，与各册学生用书配合使用。