CA 1354 then KE 852 at Beijing
Sanya → Beijing → Seoul Incheon
Timetable, Beijing time
15:45CA 1354 from Sanya at the gate
10:40KE 852 to Seoul Incheon leaves the gate
18 h 55 apart on the timetable, overnight
KE 852 leaves 18 h 55 after CA 1354 arrives on the timetable: more than half a day, so not a connection we count.