When you played in refine items, you may found that it is better +5 here is the lucky +7 over there, and that is a Huge Diffrence in Jade Dynasty..
Someone make +1 100% or something like other games do its bad enough
it gets to +20, but breaking at +1 over and over the statistic should not be like that, even if you have crappy luck it should refine one but still no way to break 4 at +1, that is why! The system is designed that on purpose, so that you need CS items to increase your odds. or better yet just spend a lot on bronze sigil to get 100% sucess rate. So at last, you couldnt refine a +4 over there to save your life, and just ended up buying your gear from other players there.
In the game. you can get +5 easy and starting to get +6's on the regular too, people keep claiming that there are skills and patterns to refining, when in fact the results are just generated by random number generators. lmao. There are random number generators and pseudo-random generators. Even in a pseudo-random generator, the numbers are only not fully random according to vigorous and reptitive statistical tests. There is no way for a pattern to be detected with the small amount of trials that players do, and their lack of ability to track large amount of trials.
Credits for Refining guide