How to levy personal income tax on the income obtained from personal public auction of manuscripts?

According to the Notice of State Taxation Administration of The People's Republic of China City, People's Republic of China (PRC) on Printing and Distributing the Provisions on the Collection of Individual Income Tax (Guo Shui Fa [1994] No.89), individual income tax is levied according to the item of "royalty income" for the income obtained by individuals from public auction of their original or duplicate works.