1. The correct construction site may not be found yet. It is suggested to try to find the tips in the game to see if there are clear architectural requirements.
2. If the location is correct, but it still cannot be established, it may be because there are not enough gold coins or water and electricity. If so, these resources need to be replenished in time.
3. Network problems may also make it impossible to establish. If the current network situation is not good, it is recommended to try again after the network is stable.
If the above methods can't solve the problem, it is recommended to check the game forum or customer service support for more detailed help.