Why Shenzhen has no ancestors?

There may be many reasons why Shenzhen has no ancestors. Here are some possible reasons:

1. Shenzhen is not the core territory of Yuanzu. The core areas of Yuanzu are the Yangtze River Delta and Bayu, and their popularity in Shenzhen may not be as high as these core areas.

2. Yuanzu's market share in Shenzhen may be small, or the competitive pressure may be great.

3. For strategic reasons, Yuanzu may decide to invest more resources in other places, such as the Yangtze River Delta and Bayu, so as to gain greater market share in these areas.

The above are just some possible reasons, and the specific situation may be different due to the change of time and place.