 Complete the following phrase:  On October 2123, 1956, a delegation composed of 40 writers and artists discussed the questions of intellectual freedom with such prominent party cadres as Trường Chinh, Xuân Thủy, and Tố Hữu. Of the intellectuals present, the young poet Lê Đạt expressed particularly sharp criticism of the regimes intolerant cultural policies in general, and of To Huu and Hoai Thanh in particular. Among others, he condemned the imprisonment of the poet Trần Dần, and the harassment to which Văn Cao, a famous poet and composer, had been subjected. On the second day, it was the artists turn to speak. On the third day, Truong Chinh declared that the intellectuals complaints were justified, but he instructed the participants not to publish anything about the debate in the press. The 