AVIC showed a model of FC-31 in the 2015 Dubai Airshow. The company claimed a combat radius of 1200km:
"AVIC has only just released a basic specification for the FC-31 aircraft. Length is 55 feet, 1.5 inches, span is 37 feet, 8.75 inches and height is 15 feet, 8.5 inches. Maximum takeoff weight is listed at 55,000 pounds and weapons carrying capability at 17,600 pounds. AVIC claims that the FC-31 will be able to reach a service ceiling of 52,500 feet, and a top speed of Mach 1.8. Combat radius is 648 nm. The airframe is stressed to +9/-3 g, and has a projected service life of 6,000 to 8,000 hours, or 30 years."
Also as shown in Zhuhai 2016:
View attachment 155739