If you accidentally stepped into the circle, some people may get angry at you, but nothing is going to happen. Some really pissed off bloke might
swear at you with some profane words, most likely in Hokkien, but that's the worst that will happen. If you don't do anything but simply walked away, nothing further will happen.
If you want something to happen, you can spit or pee into the circle after stepping into it, and depending on your luck, something bad may happen to you. Have fun!
Cheers!
What should I do if I accidentally step into this circle?
If I didn't do anything what will happen to me?.............