South Korean president Yoon Seok-yueh arrived at the Constitutional Court at about 9:10 am local time today (February 11) to attend the seventh public debate of the impeachment trial held at 10 am on the same day. According to the previous arrangement of the Constitutional Court, four witnesses were questioned by the Congress and Yin Xiyue in turn during the trial on that day, they are Li Xiangmin, the former minister of Administration and security; Shen Yuanshi, the head of the national security office; Chang Baiyu, the former third director of the National Intelligence Agency; and Jin Longbin, the head of the Central Election Management Commission.