Yi Liang chose to make a trip to the military ministry, where Commander Fan was being held in secret.
Ever since he discovered that the military report that Yi Jiahao had submitted back then was most likely suppressed by commander fan, he had mysteriously disappeared. Thus, commander fan was listed as the number one suspect and was investigated by the military ministry.
After a period of intense investigation, it was indeed found that there were countless connections between commander fan and the leader of the DE organization, as well as some obvious clues.
It was almost certain that commander fan was an important spy placed by the DE organization in the military.
Of course, the order to detain commander fan was carried out in complete secrecy. The outside world knew almost nothing. They only knew that commander fan was recently carrying out a secret mission, so they temporarily did not reveal his whereabouts.