Instead of starting a PKU-DGHA EMU....a HLZ-DGHA could have been a bettter option.
Because the timings is from PKU is very close to the existing one i.e. at 19:30 there is a train towards DGHA from PKU.
Even weekend service from HLZ-DGHA can be started on experimental basis.
HLZ 05:25 to DGHA 08:45
&...
more... DGHA 19:00 to HLZ 22:25 .
This will make the families/tourists to visit DIGHA and enjoy full day and come back home without staying.