The Yin Yang Eye is an asset in the Heavenly Master's profession, a blessing from the founder, allowing one to see ghosts naturally. Once cultivated properly, it has remarkable effects in suppressing spirits! It's practically a cheat for a Heavenly Master! It can rival Shuangshuang's Dharma Eye! No Heavenly Master would not want it!
But if you're not in the Heavenly Master profession, having a Yin Yang Eye is like a death sentence! To ghosts, the Yin Yang Eye is a great tool to increase cultivation, akin to Heavenly Materials and Earthly Treasures in martial arts novels!
Having a Yin Yang Eye without the ability to protect oneself is like sending an invitation for spirits to come and devour Dong Wentao for a boost in their cultivation! So far, the Taoist Book records of those with a Yin Yang Eye who didn't become Heavenly Masters all ended up dying young at the hands of spirits!
