In his capacity as a member of the United Nations Trusteeship Council, Ambassador Yang made many trips to Africa, and was on close terms with many independence leaders on the continent.
當時楊西昆是我國駐聯合國代表團託管理事會的專門委員，曾數度訪問非洲，和當地發起獨立運動的領袖多有接觸。