Honestly that's pures speculation !
The Soaering Dragon was never displayed with any kind of armament nor has the C-701 actually ever seen on an operational PLAAF aircraft.
As far as I understand that missile is at first an export weapon - as uncovered in Iran - or a naval missile but I've never seen one under an aircraft.
Deino
Most of the Chinese air to surface missiles have not been shown being carried by PLAAF aircraft. Doesn't mean that they can't.
All C-701/3/4/5 variants are offered for export, but nowhere was it stated that they are only for export. The Soar Dragon's payload is about 650 kg, which would be excessive for cameras and monitoring equipment, and seeing that the Soar Dragon being a naval UAV, it is very possible that a light missile such as the C-701 would be used.
It wouldn't be the first time that a Chinese URAV can also carry weapons.