This is actually an AC fare, not an NH fare, and not your run of the mill discount biz class fare. Allows 1 free stopover (not to exceed 14 days) and other stopovers for $100. Also, allows a large number of AC coded flights across the water and then many carriers once in Asia (JL, KE, OZ, CX...)
No minimum stay, so also easy to use this as a tag on of extra miles to SE Asia when your destination is actually N Asia (just do a quick turn in KUL).