PHOTOS President Lee Jae-myung's inauguration day

President Lee Jae-myung receives a report on the transfer of military command authority during a phone call with Chairman of the Joint Chiefs of Staff Kim Myung-soo at his residence in Incheon, Wednesday. Yonhap

President Lee Jae-myung and first lady Kim Hye-kyung greet a child as they depart from their residence in Incheon, Wednesday. Yonhap

President Lee Jae-myung gets into a car to depart from his residence in Incheon, Wednesday. Yonhap

A vehicle carrying President Lee Jae-myung and first lady Kim Hye-kyung leaves their residence in Incheon, Wednesday. Yonhap

The presidential flag is hoisted at the presidential office building in Yongsan, Seoul, Wednesday, as President Lee Jae-myung begins his term. Yonhap

President Lee Jae-myung and first lady Kim Hye-kyung visit the Seoul National Cemetery, Wednesday, to pay their respects to Korea's patriots, together with the leadership of the Democratic Party of Korea's election campaign committee. Yonhap

President Lee Jae-myung and first lady Kim Hye-kyung pay their respects at the Memorial Tower of the Seoul National Cemetery, Wednesday. Yonhap

President Lee Jae-myung and first lady Kim Hye-kyung pay tribute at the Memorial Tower of the Seoul National Cemetery, Wednesday. Yonhap

President Lee Jae-myung signs a guestbook after paying respects at the Seoul National Cemetery, Wednesday. Yonhap

The message by President Lee Jae-myung in the guestbook at the Seoul National Cemetary reads, "A world where we live together. A nation that belongs to the people. A country where the people are happy. We will build this together with the people." Yonhap

A motorcade transporting President Lee Jae-myung heads to the National Assembly in Yeouido, Seoul, for the inauguration ceremony, Wednesday. Yonhap

President Lee Jae-myung arrives with first lady Kim Hye-kyung at the National Assembly in Yeouido, Seoul, to take the oath of office. Joint Press Corps

President Lee Jae-myung receives a standing ovation at his inauguration ceremony, held at the National Assembly in Yeouido, Seoul, Wednesday. Joint Press Corps

President Lee Jae-myung takes the oath of office at the presidential inauguration ceremony at the National Assembly in Seoul, Wednesday. Joint Press Corps

The inauguration ceremony of President Lee Jae-myung is held at the National Assembly in Yeouido, Seoul, Wednesday. Joint Press Corps

President Lee Jae-myung makes a heart shape with his arms toward citizens gathered on the lawn after his inauguration ceremony held at the National Assembly in Yeouido, Seoul, Wednesday. Joint Press Corps

President Lee Jae-myung delivers a speech at a luncheon commemorating his inauguration at the National Assembly in Yeouido, Seoul. Joint Press Corps

President Lee Jae-myung greets officials as he arrives at the presidential office building in Yongsan, Seoul, Wednesday. Joint Press Corps