Lost the Sun. Volume 1

Another release on paper by a Russian-speaking author set in Ancient China. Quite an epic historical fantasy with a romantic line. The author has clearly been inspired by Shapolan.
I read the electronic version (which is currently unavailable).
The young prince is entrusted to the care of a young marshal, who is clearly not thrilled with the unsociable child. Together, they will have to endure a grueling war and accept themselves.
Their world will shatter into pieces and reassemble into a completely different picture.