I think it is favours not flavour in a sense that the novel (yes it's a novel) is about how the main character named Fu Rong being able to relive her life from a pivotal point after she died. She retained her memory from the previous time that she lived her life so getting a second chance to live that life, she tried to make choices and guide others in their choices to shape events so that herself and her loved ones will have more favorable outcomes of events, like no deaths in childbirths, her choice of husband won't come with in-laws from hell or leave her widowed, etc. I am sure they will make many changes from the novel so I don't know if it's such a good idea to read it before we see the drama. It might ruin the viewing experience. I personally read it already because it was available in Vietnamese, my native language, and I didn't have the discipline to wait. Unfortunately, I couldn't find an English translation and the google translator was terrible when I tried to copy and paste to translate it from Vietnamese to English to see if that would be of any use to anyone interested in the English translation.
I am excited to see ZZH and JJY paired up for this. It almost feel like their LoYX characters have reincarnated into these characters. Instead of her having her scar cured she ended up having her face slightly marred after an incident. ZZH character is a prince once again and he also has a peculiar affliction, although not nearly as grave and life threatening as the zombie poison. Maybe he won't have that problem in the drama adapted version. Anyway, can't wait to see their chemistry again and hope this time will be a HE.