Oddly enough, the Annals of Joseon Dynasty never mentions the map although it was obviously a national project. Another interesting fact is that this map uses the Ming Chinese era name "Jianwen". After the Jianwen Emperor lost to Zhu Di in a civil war, the new emperor banned the use of the era name "Jianwen" in the 10th month of 1402. Thus the map should have used the era name "Hongwu", not "Jianwen". However, the era name "Jianwen" can be found even on the later Ryūkoku and Honkōji copies. This suggests that the Kangnido was never disclosed to the Chinese.