"Park JaeGa". It's the preface to North Korean studies.

 Bukhakui is an article written by Park JaeGa after visiting the Qing Dynasty. It is not good to unconditionally disparage the past culture, but it is not good to worship without grounds due to excessive expression. In any case, in this article written in the late 18th century, the main content is the comparison of culture between Korea and the Qing Dynasty. The preface to this book was written by Park Jae-Ga's very close friend Park Ji-won. The contrast between the original text and the translated version was omitted because Sohae was just viewed for fun. If you are bored, please read the writings of Joseon Dynasty writers (there are many translated versions) and you will feel that they are not boring people who have always been looking for humanity. In particular, I recommend Park Jaega, Lee Deok-moo, Park Ji-won, and Lee Gyu-bo's writings. There is no other way to study. If you don't know anything, you'd better catch the person on the street and ask. Even if you are a servant, it is the right thing to learn from him if you know more letters than me. If you are ashamed of not being like others and do not ask someone better than you, it becomes like locking yourself in the bondage of frustration and ignorance for the rest of your life. Since Korean scholars are born in a corner of the world, they are naturally biased. (It may seem funny at this time, but it is a convincing argument at the time) Balo has never stepped on Chinese soil, and then has no chance to leave the country's territory until he dies. The summary example says that it should be rather tacky and only thinks that dirty is frugal. The so-called private citizens of private, agricultural, and industrial enterprise only remain in name, and the financial resources to be used are becoming increasingly scarce. This is a phenomenon that occurs because they do not know the intention of learning. If I try to study in the future, I wonder what I will do without learning China. In this regard, the literati considers the old system of China dirty, saying, "It is embarrassing to learn because it is the orangkadeul that dominates Zimmeung China." In other words, in order for the law to be good and the system to be beautiful, no matter how orang you are, you must truly be a teacher. Moreover, is it because the old laws of Songmyeong per party still remain since the three generations (Ha, Sang, Ju) of the large scale, wideness, greatness, grandness of all productions, and brilliantness of sentences? If you compare mine with them, it's true, but you pretend to be the most human in the world with a handful of topknots, blame them for fishy and targeting their mountains and sheep, and ignore China's own good and beautiful system at the same time. It's simple, but you can't tell others one by one, and even if you say it, people won't believe it. Therefore, what they do not believe means that they hate us, so it tells us that the hate temperament is biased, and the beginning of the mind not to believe it lies in blaming the Chinese mountains and streams.