Original: After his father was forced from office due to his opposition to the government appeasement policy towards the Jurchen in 1140, Zhu Xi received instruction from his father at home.
Simplified: Rather than focusing on the Book of Changes like other Neo-Confucians, he chose to emphasize the Four Books: the Great Learning, the Doctrine of the Mean, the Analects of Confucius, and the Mencius as the core curriculum (thing to learn) for aspiring scholar officials.