Because the secret organization's tail has finally been caught by the Afterlife Department led by Gu Shi, and the Deserters led by Gu Lin, the secret organization which finally noticed it began to hide further this time after the purge done by the Deserters in the mortal realm has happened. After all, the number of the spy grim reapers that the Deserters caught is no joke. The secret organization really lost big time here.
Thus, the secret organization lived up to their name. They really hid, becoming even more secretive of their activities. Thus, Gu Shi had Sha Jiu and Hai Ba monitor even closer the other worlds in case the secret organization would attack the other worlds knowing that the Stable World has the Afterlife Department in Heaven and the Deserters in the mortal realm to look after it.