1. Raw material and logistics problems: Although logistics is now very convenient, there may still be some special circumstances or difficulties that prevent Xijia De from establishing a branch in Suzhou.
2. Differences in regional tastes: Although people in Northeast China are accustomed to consuming dumplings, the local eating habits and tastes in Suzhou may differ from those of Heijia De's dumplings, resulting in a low market acceptance in Suzhou.
3. Franchise strategy: Xijia De may have adopted direct management and completely abandoned the franchise model. As a result, instead of opening a branch in Suzhou, they may have chosen to open a branch or conduct other business elsewhere.
These are just possible factors, and the real situation may be different.