Excited for this because of we get yet another Zhang Bin Bin and Diliraba matchup but after reading spoilers for the ending I hope the drama extends it or does something to tie up any loose ends. It's a bit too open imo.
I think it's Fei Wo Si Cun? She wrote the novel the drama is adapted from. Her writing is not everyone's cup of tea, but I like angst filled love stories so I'll probably be checking this out whenever it airs.
More about the drama and leads here:https://www.avirtualvoyage.net/2017/08/eastern-palace-drama-goodbye-my-princess-casts-chen-xing-xu-and-peng-xiao-ran-as-leads.html
Sorry forgot to add there are some (major?) spoilers in the blog post and comments.
I know fans of the novel aren't too happy with the leads, but I'll keep an open mind at least until I see the first trailer. This story as well as Siege in Fog are my favorite Fei Wo Si Cun novels. I just hope they don't change too much with this adaptation, especially the ending. Even though the ending was sad it fit the novel.
Celebrity 
https://www.avirtualvoyage.net/2017/08/eastern-palace-drama-goodbye-my-princess-casts-chen-xing-xu-and-peng-xiao-ran-as-leads.html
https://www.youtube.com/watch?v=v6EOwfeYvgs