Question: North Koreans, Yang Seung-ho and Kim Tae-yeon, both have what profession in common?

Context articles: Yang Seung-ho
Choson Exchange
Rock N Roll Grandpa
Kim Tae-yeon discography
Koreans in Nepal
Kim Tae-yeon
Kim Il-sung and Kim Jong-il badges
Tumen, Jilin
Axe murder incident
North Korean defectors in Thailand

Yang Seung-ho (양승호; born October 16, 1987), is a South Korean idol singer, dancer, actor, model and the leader of Korean male group MBLAQ, currently active in South Korea under Will Entertainment.
Choson Exchange is a Singapore-registered social enterprise focusing on economic policy, business and legal training for young North Koreans in the Democratic People's Republic of Korea.
 Choson Exchange brings foreign volunteers to teach entrepreneurship, business, marketing, law or economics, after which the volunteers tour relevant sites in North Korea.
 They also sponsor North Koreans to go overseas for exposure and learning.
 Programs include economic policy, entrepreneurship and financial sector development.
 The organization has trained over 1,600 North Koreans since 2009.
 Choson Exchange is the largest business network in North Korea and the most active organization training Koreans in economic areas.
 It has been profiled as a Harvard Business School case study and was cited by futurist Parag Khanna's book Connectography as "the most prominent international nongovernmental organization operating in North Korea".
Rock N Roll Grandpa is a 2016 Korean film, directed by Lee Jang-hee.
 The film will portray a boy full of dreams who rekindles an old man's passion.
 It stars Yang Seung-ho, Ha eun-seol, Oh Kwang-rok, and more.
Kim Tae-yeon, better known by the mononym Taeyeon, is a South Korean singer.
 Her discography consists of one studio album, two extended plays (EPs), twenty singles (including four as featured artist), and three promotional singles.
 She debuted as a member of South Korean girl group Girls' Generation in August 2007 and initially gained some popularity as a singer upon recording soundtrack songs "If" for "Hong Gil Dong" and "Can You Hear Me" for "Beethoven Virus" (2008).
 She subsequently established herself as one of the most renowned vocalist on the South Korean music scene with further soundtrack recordings, notably "I Love You" for "" (2010), "Missing You like Crazy" for "The King 2 Hearts", "Closer" for "To the Beautiful You" (2012), and "And One" for "That Winter, the Wind Blows" (2013), all of which managed to enter the top ten of South Korea's Gaon Digital Chart.
 Apart from soundtrack recordings, Taeyeon has also recorded duets with other artists, most notably "Like a Star" with The One and "Different" with Kim Bum-soo, which peaked at numbers one and two on the Gaon Digital Chart, respectively.
Koreans in Nepal form a small expatriate community consisting mainly of Catholic nuns, volunteers and businesspeople.
 According to South Korea's Ministry of Foreign Affairs and Trade, there were 645 South Koreans living in Nepal in 2013, up by more than 70% from 374 in 2009.
 There are also known to be some North Koreans doing business in the country.
Kim Tae-yeon (born March 9, 1989), referred to as Taeyeon, is a South Korean singer.
 She had been a trainee at S.M. Entertainment's Starlight Academy during her middle school years before debuting as a member of the agency's girl group, Girls' Generation, in 2007.
 Since then, she has risen to prominence due to the group's success on the Asian music scene and further participated in the agency's projects Girls' Generation-TTS and SM the Ballad.
 Aside from group activities, she has also recorded songs for various television dramas and movies.
Kim Il-sung and Kim Jong-il badges are lapel pins with portraits of the leader of North Korea, Kim Il-sung and Kim Jong-il.
 They have been made since the late 1960s.
 The badges are produced by the Mansudae Art Studio.
 There are more than 20 different designs, some of which are more sought-after than others.
 Ordinary North Koreans wear simple designs with a portrait of Kim Il-sung, whereas those higher up in the society prefer badges that have both Kim Il-sung and Kim Jong-il portrayed.
Tumen is a county-level city in Yanbian Korean Autonomous Prefecture, eastern Jilin province, Northeast China.
 Of its 136,000 inhabitants, approximately 78,000 (or 57%) are of Korean descent.
 The two official languages are Chinese and Korean.
 Tumen is separated from Namyang of North Hamgyong province of North Korea by the Tumen River.
 Due to this proximity, many North Koreans escaping their country pass through Tumen.
 Tumen is also the location of a large detention center for captured North Koreans awaiting deportation.
 Tumen has two major food markets, the South Market and the North Market, where most of the residents purchase their food.
 Packaged foods and meats are usually sold inside the building, and vegetables are sold outside.
 There are six elementary schools, with three Korean schools, and three Chinese schools.
The axe murder incident (Korean: 판문점 도끼살인사건 ; Hanja: 板門店도끼殺人事件,도끼蠻行事件; literally, "Panmunjom axe murder incident") was the killing of two United States Army officers, Arthur Bonifas and Mark Barrett, by North Korean soldiers on August 18, 1976, in the Joint Security Area (JSA) located in the Korean Demilitarized Zone (DMZ).
 The U.S. Army officers had been part of a work party cutting down a poplar tree in the JSA that partially blocked the view of United Nations (U.N.) observers when they were assaulted and killed by the North Koreans, who claimed that the tree was planted by Kim Il-Sung.
Thailand has become one of the destinations of choice for North Korean defectors aiming to resettle in third countries, particularly South Korea.
 Although the Royal Thai Government has not yet officially recognized the refugee status of North Korean escapees, the Thai government allows North Koreans illegally entering the country to resettle in South Korea.
 This is possible because South Korea’s domestic law recognizes that North Koreans are also citizens of South Korea.
 The Thai government also cites the "conveniently blurred geographical distinctions" between the two Koreas in facilitating the transfer and resettlement process.