CZ 3224 then HU 7313 at Guangzhou
Yan'an → Guangzhou → Nanjing
Timetable, Guangzhou time
00:05CZ 3224 from Yan'an at the gate
15:15HU 7313 to Nanjing leaves the gate
15 h 10 apart on the timetable
HU 7313 leaves 15 h 10 after CZ 3224 arrives on the timetable: more than half a day, so not a connection we count.