[14] Jeong would then play for Korea Trust Bank [ko] in the 1971 Korean National Semi-Professional Football League where he would be part of the winning squad for the spring season of the year.

[20] In the autumn 1973 season, he would be part of the winning squad for Korea Trust Bank and would be awarded the title of All-Star Player by the Federation of Unemployed Footballers [ko].

[29] Jeong would represent his home country during the 1968 International Military Football Championship, scoring the first goal in a 2–0 victory against South Vietnam on April 20, 1968.

[30] During the 1968 Merdeka Tournament [ms], Jeong would score against Japan B on August 18 with the match concluding in a 2–0 victory for the Taegeuk Warriors.

[34] During the final against defending champions Indonesia, Jeong would score the deciding goal in the 14th minute and would give South Korea their first title in the tournament.

[45] Jeong would partake in a series of friendlies across Latin America where he would play against several teams such as Mexico, El Salvador, Peru, Bolivia, Brazil, Paraguay, Argentina, and Uruguay from January 5 to March 6 in 16 different matches in preparation for future tournaments of the year.

However, plans had to be postponed and reduced due to the poor conditions the Korean players would endure through as well as Jeong, credited as being the main goal scorer of the team at the time, suffering a leg injury and being unable to play a single match.

[53] His international career would be further reduced when alongside Kim Jung-nam, would end up being replaced before the 1974 FIFA World Cup qualifiers.

[54] This decision would be met with controversy however as the Korean Football Association would be criticized for readily replacing coaches and players whenever the team faced any setback.

[61] Jeong would also make an appearance in a televised special by MBC dedicated to South Korean football history after their bid to host the 2002 FIFA World Cup was confirmed.