Datang: at the Beginning, He Was Captured to Treat the Princess

[Datang + Time Travel + Martial Arts + Relaxation] Du Bai was originally a young doctor in his hometown, but an unexpected accident happened. He actually traveled back in time to the Zhenguan period of the Tang Dynasty. He originally wanted to open a small medical clinic in peace, marry a beautiful young daughter-in-law, and live the rest of his life in peace. However, he never thought that he would be captured by the emperor to treat the princess...