He was elevated to Cardinal Priest of "Santa Maria in Via" by Pope Pius XII in the consistory of February 18, 1946. Tien, the first cardinal from China, was then named, on April 11 of that same year, the first Archbishop of Beijing in post-Yuan Dynasty China. In 1951 he was exiled from China by the Communist regime, and spent this time in Illinois in the United States, to where he came that year for treatment of a heart ailment. He was one of the cardinal electors who participated in the 1958 papal conclave which selected Pope John XXIII, and was Apostolic Administrator of Taipei from December 16, 1959 to 1966. From 1962 to 1965, he attended the Second Vatican Council, and voted in the 1963 papal conclave, which selected Pope Paul VI.