 With the abolishment of the academy in 1909, he transferred to Japan's as a government-financed student along with Crown Prince Yi Eun on the orders of dethroned Emperor Gojong.Soon after, he advanced to the Imperial Japanese Army Academy.At that time, there were several students from the Empire of Korea enrolled at the military academy, and with the shock of the 1910 annexation of Korea by Japan, a few left the Academy to join in the movements for Korean independence, but most followed the lead of Ji Cheong-cheon, who argued that they should leave to fight only after having studied and developed their skills.