Board Game Arena

If you have a Fire2 Tile a Sanctuary and 3 Trading Houses connected with a Bridge arent you allowed to found a city ?

https://boardgamearena.com/6/terramysti ... ayFrom=123

Bug or Rule misunaderstanding ?

Thanks for your answer

The Sanctuary bonus of requiring 3 directly adjacent building instead of 4 only applies to the town that contains the Sanctuary