Vietnam's foreign minister plus a few other senior diplomats are in North Korea for a three-day stay to hammer out protocol issues ahead of the North Korean leader's visit to Hanoi later this month.
The country's foreign ministry announced through Twitter on Monday that Hanoi's foreign minister Pham Binh Minh is visiting the North from February 12th to 14th at the invitation of the North's Foreign Minister Ri Yong-ho.
The delegation is believed to have arrived in Pyeongyang Tuesday afternoon.
Among the officials accompanying Minh is the protocol chief of Vietnam's foreign ministry.
This suggests that the Vietnamese delegation's main talking point with Pyeongyang will be inviting Kim Jong-un for a state visit.
Before the venue for the Kim-Trump summit was determined, the Vietnamese government had recommended its capital Hanoi partially to have Kim Jong-un as a state guest.
It would be the first time for a North Korean leader to visit Vietnam in over 50 years.
The late former North Korean leader Kim Il-sung, who's Kim Jong-un's grandfather, visited Hanoi two times in 1958 and 1964.
So if a state visit does happen, then there could be a North Korea-Vietnam summit as well before or after the one with the U.S.
Alongside ironing out the details on that front, other matters will likely be on the table, such as the places Kim Jong-un will visit, where he'll say and which routes he should take.
The Vietnamese delegation might also pay a courtesy visit to Kim Jong-un.
After this meeting in Pyeongyang, the director of North Korea's State Affairs Commission, Kim Chang-son, could make his way to Hanoi for a look around the venue just like he did before the Singapore summit.
Oh Jung-hee, Arirang News.