What Is the Chinese Training Money Adrienne Found at WeWork?

Adrienne of Underunderstood traced the prop hundred-dollar bills at her WeWork to articles, a blog post, and a Reddit thread that call them training money for Chinese bank tellers learning what American currency looks like. Friends who read Chinese told her the large hot-pink letters say something like coupon, ticket, or cash, and the smaller letters say training materials, not for circulation. She is not sure the label makes them legitimate. Local police warnings describe people and businesses taking the bills and then reporting them. The articles name no bank and no expert. Her question is whether the training money is real, or a story printed on notes so they can be sold as legal.