People that have never used the gymnastic rings may know they are difficult but it takes a try on them to truly grasp the strength it takes to do an impressive routine.
I came upon this video awhile back. It shows gymnast Andreas Aguilar at the 1991 World Professional Gymnastics Championships. Its most likely just an exhibition, rather then competing, due to the moves he performs.
Of particular note I want you to pay attention to the muscle up in the L-sit position. That may very well be one of the smoothest muscle ups ever. A far cry from the kipping action most athletes use.
There’s quite a few iron crosses and you’ll want to pay attention to the very unique dismount.
Good Luck and Good Ring Training,
P.S. Rings can build awesome strength and you can buy a set of gymnastic rings here.