Xiangcheng has always been regarded as a masterpiece of China's incense culture, which is highly praised by scholars. Apart from the two versions of "Xiangcheng" circulating in the market, other folk versions have their own characteristics and mistakes.

Engraving: Also called printing plate, reproduction plate and engraving plate. All refer to books printed by block printing.

There are two printed editions of Xiangcheng: the printed edition of Zhouzi in Zhou Jia in the 16th year of Chongzhen in Ming Dynasty (1643) and the revised edition of Zhouliangjie in the first year of Kangxi in Qing Dynasty (16 1), both with 28 volumes. In the 16th year of Chongzhen in Ming Dynasty (1643), the Zhou block-printed edition was collected by the National Library of China, the Library of China Academy of Sciences, the Capital Library and the Shanghai Library according to the Bibliography of Rare Chinese Ancient Books. In the first year of Kangxi in Qing Dynasty (166 1), Zhou Lianggong's younger brother Zhou rebuilt the version. "At that time, it was not a new version damaged by time, but was restored and redrawn by Hanukkah", which was collected by the National Library and the Library of Chinese Academy of Sciences.

Banknote book: A book copied from an original or printed book.

"Xiangcheng" banknotes are extremely rare. Waseda University in Japan has a beautiful layout and excellent appearance.