Brand focus is a brilliant thing. We argue that it is essential. And, we are huge fans on intense, laser focus--especially when it comes to the restaurant business. Single-item restaurants are fascinating. But there's a Chinese fast-casual chain with 6,000 stores that has just opened their first store in the United States. It sounds like they're having a challenge. What can the small-business brand learn from seemingly simple mistakes being made by an enormous Chinese brand opening up the Southern California market?