Doctrine of the Mean
Han Yu and Li Ao both used The "Great Learning". Li Ao incorporated a lot of Buddhist and Taoist ideas into his work. Zi SiConfucius's grandsonis said to have taught Mencius and written the Doctrine of the Mean. He may also have written the beginning of the "Great Learning". Ma Yung edited the "Great Learning" in the Han dynasty, giving his views of the general meaning.