If Mengshi can't fit in the cabin then perhaps Z-18 can carry it on a sling?Yup need to increase the Z 18 MTOW of 14 ton to higher number with empty weight of 7 ton. So it can carry max 5-6 ton. Can't even carry Mengshi. Not sure if dimension wise it can do that maybe old Mengshi I with 5Ton empty weight.
Sofar I see it can carry mountain cat ATV or Light weight 155 mm gun
Yeah that is a possibility But generally the medium size helicopter use is to carry lightweight 155 mm Howitzer like AH4. But AH4 never adopted by the PLA instead they opt for PCL 181. Not sure why I guess it is mobile but still you need light howitzer to pummel foe from the hill or bullockIf Mengshi can't fit in the cabin then perhaps Z-18 can carry it on a sling?