Prince Gong's fortune telling

What is the altar of the Three Princes in Xiamen dedicated to?

Nezha.

Nezha is enshrined in the public altar of Prince Yuzhi in Xiamen, because Nezha is known as Prince Nezha.

Xiamen, referred to as Ludao for short, is a prefecture-level city, a sub-provincial city, a city with separate plans and a first-class big city under the jurisdiction of Fujian Province. It is the China Special Economic Zone approved by the State Council and an important central city, port and scenic tourist city along the southeast coast.