Abusing his authority, he undermined the work system related to the construction of the capital city established by Kim Il Sung and Kim Jong Il, reducing the construction and building-materials bases to such bad shape little short of debris in a few years. He weakened the ranks of technicians and skilled workers at the units for the construction of the capital city in a crafty manner and transferred major construction units to his confidants so that they might make money. In this way he deliberately disturbed the construction in Pyongyang.