The episode was written by co-executive producers Edward Kitsis and Adam Horowitz, and directed by regular Lost editor Stephen Semel.
In late 2004, on the island, they debate whether to defect to the rival faction of survivors led by John Locke (Terry O'Quinn).
A subplot follows Sayid Jarrah (Naveen Andrews) and Desmond Hume (Henry Ian Cusick) on board the Kahana, where they learn more about the freighter's mission and find somebody they once knew.
Jin's journey to the hospital is marred by several unfortunate incidents, including difficulty in purchasing a stuffed panda and his cell phone being broken.
He was rushing to the birth of a Chinese ambassador's grandson to deliver the panda as a gift on behalf of his employer, Sun's father.
After having a heartfelt conversation while fishing with Bernard Nadler, the only other married man on the island, he forgives Sun, who assures him that the baby is his.
Executive producers and writers Carlton Cuse and Damon Lindelof left the identity of the sixth deliberately ambiguous to provoke debate after the episode.
[10] "Ji Yeon" is the first episode since the second season finale, "Live Together, Die Alone", in which Harold Perrineau, Jr. appears as Michael Dawson.
Perrineau was "really hurt" by the creative decision to leave him out, and went on to appear in the British horror film 28 Weeks Later and Demons, a pilot for CBS.