Is there a man named Yidange in the history of "The Secret Agent of the Deep Palace"?
Pure blowing water, there is no such person. Even her cousin, the so-called Fei Jing, doesn't exist. At least during the years of Shunzhi, Kangxi, Yongzheng and Qianlong, there was only one quiet princess, namely Bolzigit's niece of Xiao Zhuang Wen after Shunzhi was abolished. Well, the harem dramas nowadays are all kinds of fictions and idiots. Just look at them and don't take it seriously.