How to upgrade China Hongtu City?

In this game, the method of urban upgrading is as follows:

1. Click the "Government Affairs" button in the lower right corner of the main interface of Huaxia Hongtu Game. Choose urban facilities (such as agriculture, industry, etc.). ) in the corresponding interface to upgrade. You can develop technology to speed up efficiency or have a direct architectural effect, but not all buildings can be superimposed.

2. Upgrade will consume a certain amount of gold coins and policy points. Only green buildings can be upgraded or rearranged, and the demolition is free.

3. It should be noted that you need to be cautious when using this function, because the built building will not be restored to its original state!