Crotchless

So earlier in my posts, I tried explaining the crotchless pants that babies wear. I was able to take a pic. There's one of the child using the bathroom. Here the grandmother is holding him. Other times in china you may see the child just squat. It really does make perfect sense and teaches potty training early.. Except it can be awkard for us to see a child using the bathroom...anywhere

I am used to seeing this now...my only question is how did she know the baby had to use the bathroom??