Answer:
Both government leaders of Zanj and Ancient China had the attitudes in maintaining their power by following Divine Right Theory. This was also meant as Mandate Of Heaven. Basically it’s idea is Heaven grants the king's rights to rule region based on their capacity for better governance.
The other similarity between them was that they both were in practice of collecting taxes from citizens. For example, commercial, land, and agriculture taxes. These played as important sources of money for the government.