CN 7140 then SC 2124 at Beijing
Harbin → Beijing → Xiamen
Timetable, Beijing time
21:30CN 7140 from Harbin at the gate
20:30SC 2124 to Xiamen leaves the gate
23 h apart on the timetable, overnight
SC 2124 leaves 23 h after CN 7140 arrives on the timetable: more than half a day, so not a connection we count.