If you're looking for ancient Chinese novels with female protagonists who are not naive or overly sweet, I recommend the following novels:
1. "快穿之圓夢攻略" (The Dream Guide of Quick Transmigration): This novel features a female lead who is not naive or overly sweet. Although it is a time-travel romance set in ancient times, the female lead is worth reading about.
2. "書穿之惡毒女配生存記" (The Survival Diary of the Vicious Supporting Female Character): This novel tells the story of a vicious supporting female character who transforms into a vicious female lead. It has elements of both cruelty and sweetness and is set in a fictional ancient world.
Unfortunately, the provided search results do not contain specific recommendations for ancient Chinese novels with female protagonists who are not naive or overly sweet.