《老乞大》和《朴通事》是旧时高丽、朝鲜朝人学习汉语的会话书 ,它最初编写于元代 ,后来曾被修改过几次 ,以适应变化了的实际语言。约在 1 5 1 7年前 ,即 1 6世纪初 ,为方便学习理解 ,朝鲜著名语言学家崔世珍对修改过的本子加上了谚文注解和注音。由于看不到最早的本子 ,现在 Lao Bei Da and Pu Tong Shi were conversations about Korean learning by Koreans in old times. They were originally written in the Yuan Dynasty and were later revised several times to adapt to the changing real language. About fifteen years ago, in the early sixteenth century, a well-known Korean linguist, Choi Shizhen, added a caption of the Chinese saying and a phonetic transcription to the revised book to facilitate understanding. Because I can not see the earliest book, now