Hey, I am wondering if there are any simple ways to make a single shot non repeating crossbow that looks like it is from the Qin dynasty?  I know roughly how to make the bow for it but what I am really stuck on is the mechanism, I know a couple of methods but I was wondering what there is besides a bronze trigger release, (kinda hard for me, though I could probably work it out,) that would be more simple?  I was thinking perhaps the method where you push up on a wooden peg to release it might be good, but I am not sure they used it at this time.