It is necessary to explain that the worst group cheated in the later period is eunuchs. At the end of the Ming dynasty, it was the time when eunuchs monopolized power. They intervened in almost all state affairs, and the emperor attached great importance to them. They plundered the people's wealth and extorted money, which was extremely cruel. The eunuchs in Dongchang are very famous. How dare those swindlers shoot these vicious people?
Eunuchs can easily get money. No matter how high or low their official position is, they can always get a lot of money from the emperor. The mineral tax collected by the emperor went into the eunuch's pocket unconsciously, so rich, of course, made the swindlers covet. Another reason is that eunuchs are different from ordinary people. They pay more attention to medical care and so on, so many scammers can always cheat a lot of money under such a banner.
Another reason is that the vast majority of eunuchs have low knowledge level and are easily confused by those glib liars. They believe in magic and always think about alchemy, hoping that they can live a long life. For example, there was a eunuch in the Ming Dynasty who believed in the Jade Emperor. Liars often ask for this and that under the banner of the Jade Emperor, and let eunuchs build the Jade Emperor Pavilion for him to make an alchemy for themselves.
Eunuchs are stupid, rich and don't cheat. This is also the IQ tax they pay. But what they believed did not make them immortal, leaving a joke for future generations.