After the Sino-Japanese war, the Chinese government used part of the ships bought from the United States as compensation for the loss suffered by civil shipping companies during the war. Consequently, a new shipping company called China Union Lines Limited (CUL) was founded. The background of CUL's establishment involved a complex domestic and international relationship in the post-war era, and thus it had completely different characteristics than other private enterprises. However, the domestic situation worsened soon afterwards, so the executives decided to move CUL first to Hong Kong, and to observe changes in the situation at home and abroad before deciding on its future business direction. Because of the company's management crisis, the American side threatened to detain the vessels, while the new Chinese government was actively carrying out the united front work and mobilizing ship operators to "Return North." Ultimately because of the change in the international arena, CUL moved to Taiwan and chose to repay its loans by selling sea vessels, thus changing its business nature.