CZ 3835 then 9C 8567 at Pudong
Sanya → Shanghai → Jeju City
Timetable, Shanghai time
16:55CZ 3835 from Sanya at the gate
15:559C 8567 to Jeju City leaves the gate
23 h apart on the timetable, overnight
9C 8567 leaves 23 h after CZ 3835 arrives on the timetable: more than half a day, so not a connection we count.