Along with the increase in the number of self-extirpated eunuchs, the method of the complete removal of the genital parts was invented and refined, decreasing the death rate to less than 1% by the end of the Qing Dynasty.
自宮の増加に伴い、完全去勢の方法も洗練されていき、最終的に清代には、死亡率は1%未満になったとされる。