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Ha withdrew from government service in 1453 after the murder of Kim Jong-seo by Prince Suyang (later King Sejo).
The Sarim scholars generally shunned the royal court and studied neo-Confucianism in rural provinces especially after King Sejo's usurpation of throne in 1455, but they began to enter politics during the reign of King Seongjong.
Unlike his colleagues (later called Sayuksin) who had all pledged allegiance to King Danjeong, Shin Suk-ju betrayed them in favor of Danjeong's uncle, Grand Prince Suyang (later King Sejo), who usurped the throne from his nephew and had him killed.
This was because when the King Sejo was still a prince, his actions were greatly restricted by his political rivals, Yeonguijeong, Hwangbo In (皇甫仁) and Jwauijeong, Kim Jong-seo (金宗瑞).