(12) Earlier in Tuo's biography, cat demon worship is linked to his wife's natal household: "[Tuo] loved heterodox worships.
The assault against his wife caused Emperor Wen to take the cat demon threat seriously and to reassess his policies regarding cat demon worship: "Earlier, someone had filed a lawsuit claiming that his mother had been murdered by someone [worshipping] the cat demon.
Besides the accounts contained in Empress Dugu's and Dugu Tuo's biographies, the only other mention of the cat demon in Sui shu and Bei shi occurs in Emperor Wen's "Basic Annals," which record that, in 598 (the eighteenth year of the Kaihuang reign period), the Emperor issued a decree criminalizing cat demon worship, along with other forms of malevolent magic, including brewing gu poison (gudu), worshipping demons (yanmei), and yedao or masterless venoms (wu zhu zhi gu), on penalty of banishment (ion yu siyi).
(26) The dating of Zheng Qiye's death to 598, the very year in which Emperor Wen issued a decree criminalizing cat demon worship, suggests that she was believed to have succumbed to the cat demon attack and that, prior to her death, Empress Dugu, also a target of the demon, employed a physician skilled in Daoist healing techniques.
In summary, "idol-worship," "demon worship
," and "bad/evil religion" appear to be undefined polemical terms that could be applied to any religious tradition deemed alien by the Zoroastrian priesthood.