Dasan Jeong Yak-yong and His Brothers

Immediately after King Jeongjo's death, the Sinyu Persecution began.
While it appeared to be a persecution of Catholicism, it was actually because many Catholic officials were among the Namin (Southerners) faction that King Jeongjo had trusted.
The Jeong brothers were also caught up in this.
The third brother, Jeong Yak-jong, refused to renounce his Catholic faith and was executed by decapitation.
The second brother, Jeong Yak-jeon, and Jeong Yak-yong signed the renunciation and were sent into exile.
In the old days, the roads to exile were treacherous.
As seen in movies, they did not travel by carriage.
It would have taken at least fifteen days to reach Gangjin,
and it would have taken a month to reach Heuksando Island.