Caught in this political limbo, Zhu Changluo was deliberately not assigned a regular tutor or given any systematic Confucian education even after he started school at the age of 13, an unusually late age for Ming princes to begin their education. In 1601, the Wanli Emperor gave in to pressure from his ministers and more importantly from the empress dowager and a 19-year-old Zhu Changluo was formally instated as crown prince and heir apparent. However this formal recognition did not signal the end of court intrigues. Rumours of the Wanli Emperor's intention to replace Zhu Changluo with Zhu Changxun continued to surface through the years,