ChainCatcher news, the leader of South Korea's largest opposition party, Lee Jae-myung: calls on the ruling party to participate in the impeachment vote against Yoon Suk-yeol on Saturday. (Jinshi)

ChainCatcher news, according to a report by Jinshi citing the Korean Central News Agency, South Korean Democratic Party leader Lee Jae-myung stated that President Yoon Suk-yeol's declaration of martial law is an unconstitutional act.