Chapter 39 <— click on the link to read it.
Wo Zai Hougong Dang Ju Ju
The art is awesome (see image below) but the story and characters are just average.
Princess in the Prince’s Harem by Luna Lotus Scans – a noble girl was called ugly by the Emperor. Enraged, she disguised herself as a man and entered the Imperial Painting Competition where she drew a funny/ugly caricature of the Emperor. Her talent for trolling people caught the eye of a prince and she was forced to enter the palace as a (male) painter. (This summary is mine.)
Thanks for reading.