ซ่อนรักวิวาห์ลวง and ชายาผู้มีคุณธรรม have pretty much alike elements; cynical female protagonists, sucession of male heroes- who are least suspected by Huangdi(s), monogamy love, and more. ซ่อนรัก can be considered better than ชายา in translation. But I'd still say, ชายา's storyline is more interesting. It's such a waste of good novel to be in the wrong hands tho.
A bit slow on the making and the ending was quite abrupt. No special chapters but overall I still like it. 2 stars crossed off for the translation though.