Cheng Hao was a thinker in the Northern Song Dynasty. Together with his brother Cheng Yi, he was the founder of Neo-Confucianism in Song and Ming Dynasties, and was called "Cheng Er". The idiom "Cheng Menxue Pear" means the story of Shi Yang's visit to Cheng Yi.
Wang Bo was a writer in the early Tang Dynasty, the first of the "four outstanding writers in the early Tang Dynasty", and he was brilliant. His masterpiece was Preface to Wang Tengting. But he died young and lived only 27 years old.