The aim of the paper is to explore the mutual-interaction between Soochow and Hsin-Chu Cheng Huang Temple (City God Temple). It provides a religious cultural interaction between two Cheng Huang Temples. Along with cultural interactions, two Cheng Huang Temples set up a possibility for the further mutual interactions. With political reasons, there are many barriers between the religious mutual interactions. Two sides have worked together to make it reasonable. The result for the interaction has established a constructive model for a long-term relationship. Owing to the vary dimensions of city development between two cities, two sides approach and challenge official relationship in the next step.