These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: The Duke of Ch'in is introduced as a tyrant who only cares about money, power, and obtaining immortality. To do so he tricked three gullible handmaidens into giving the feathers of the Princess of Birds' crown to him (thus rendering her unable to meet her lover in Heaven) and then murdered them so that they couldn't ask for them back. The Duke then drowned a city just to be able to hide his Soul Jar there, and cursed the three aforementioned handmaidens to guard his Soul Jar, essentially binding them to protect their murderer's heart for eternity. Ten Ox declares that the Duke "must have the coldest heart in the world!"