 Complete the following phrase:  On 9 February 2018, Yo-jong attended the 2018 Winter Olympics opening ceremony in Pyeongchang, South Korea. This was the first time since the Korean War that a member of the ruling Kim dynasty had visited South Korea. She met with South Korean President Moon Jae-in on 10 February and revealed that she was dispatched as a special envoy of Kim Jong-un. She also delivered a personally written letter from Kim to Moon. Kim was later part of her brothers team during the 2018 North KoreaUnited States Singapore Summit and the 