The man, who has been detained since he washed up in the port city of Incheon last week, is believed to be a dissident who was previously jailed for criticizing President Xi Jinping.
A jet ski rider who has been detained since he washed up on South Korea’s coast is believed to be a Chinese dissident who feared for his safety and fled by crossing hundreds of miles of sea, trailing barrels of fuel behind him.
The coast guard in the western South Korean port city of Incheon said in a statement Sunday that a Chinese man in his 30s tried to illegally enter the country Aug. 16 by riding a jet ski from the Shandong area of China, an eastern province around 200 miles away across the Yellow Sea.
I'm sure you read the article but missed this part:
“[They] told me that they found out from the Chinese authorities that Kwon was banned from leaving China,” Lee said. “[He] had no choice but to flee China for his safety.”
China has increasingly used exit bans to bar people — including domestic critics and foreign executives — from leaving the country.
The USA state department has a "reconsider travel" warning for China, and they specifically cite exit bans as one of the reasons. Especially for Americans with Chinese dual citizenship, as China doesn't recognize dual citizenship.