From Henri K blog
The ground attack version of the #drone Cloud Shadow is currently on display at the Nanchang 2020 Airshow. It uses the 1t thrust ZF850 turbojet developed by ZFTX Aeroengine, which speaks for a unit price of ¥ 6M and a production capacity of 30 engines per year.
I think it was 2018 instead of 2016.
They are same aircraft, but different engines. The 2018 version is single engine (probably WP-11C), the 2020 version is twine engine (ZF-850). WP-11C was just a stop-gap during the development phase not meant for mass production.