7th Sense" at their first live performance in China at the 16th Music Feng Yun Bang Awards that same month. In October 2016, Johnny participated in the music festival "Spectrum Dance Music Festival" as an SM Dreamstation Crew DJ. SM Entertainment founder Lee Soo-man held a presentation at the SM Coex Artium titled "SM Town: Neo Culture Technology 2016" on January 28, 2016, where he outlined the company's plans for a new boy group in line with their "culture contents" strategy that would debut different teams based in different cities and countries around the world. 2016–2018: Debut of NCT U, NCT 127 and NCT Dream and first collaborative project On April 4, 2016, SM Entertainment announced NCT's first sub-unit would be NCT U, meaning "NCT United", which then consisted of six members: Taeil, Taeyong, Doyoung, Ten, Jaehyun and Mark. NCT U released the digital singles "The 7th Sense" on April 9 and "Without You" in two versions on April 10 (a Korean version sung by Taeil, Doyoung, and Jaehyun and a Chinese version with the addition of SM Rookies' Kun). On April 9, NCT U made their first broadcast appearance with NCT On Air on V Live hosted by Super Junior's Kim Hee-chul. The same day, they had their first live performance in China at the 16th Music Feng Yun Bang Awards alongside Chinese rookies Kun and Winwin. On April 15, the group made their debut in Korea on Music Bank. On July 1, SM announced NCT's second sub-unit, NCT 127. The unit would be based in Seoul, the number "127" representing the longitude coordinate of the city. The unit debuted with seven members: Taeil, Taeyong, Yuta, Jaehyun, Winwin, Mark, and Haechan. On July 7, they had their official debut performance on the music program M Countdown, performing debut single "Fire Truck" and "Once Again." Their debut EP, NCT #127, was released digitally on July 10 and physically on July 11. On August 18, SM announced that NCT's third sub-unit would be NCT Dream. The unit debuted with seven members: Mark, Renjun, Jeno, Haechan, Jaemin, Chenle and Jisung. Their first single, "Chewing Gum", was released on August 24, and the group had their debut performance on M Countdown the next day. On December 27, 2016, NCT 127 announced they would be making a comeback with two new members, Johnny and NCT U's Doyoung. On March 8, NCT 127 members Johnny