 In December of the same year, he joined with Nguyễn Phú Trọng, Phan Diễn, and Phạm Thanh Ngân in the Fourth Plenum of the Executive Committee, in addition to the Politburo.Triết was assigned to be the head of the Central Mobilization Committee.After he moved to another job, Trương Quang Được and Tòng Thị Phóng respectively, Hà Thị Khiết (after the 9th Congress) were assigned to hold the position.