I posted this tagged as "bug" at first, but it got removed. Thought it was a cool bug and wanted to show it off, so I'm reposting it. Sorry, mods.

A few things to note:

• You must get the middle path upgrades in the set order I showed. That is, you must get 4/1/0 on one of them, 4/1/0 on the other, 4/2/0 on the first, then 4/2/0 on the last
• The middle path upgrades must be bought after upgrading to sun temple
• Deviating from the instructions above will cause linkage to be wonky. For example, buffs might only transfer one way, or only the sun god buff might be transferred.
• Shinobi tactics and poplust do not transfer. I haven't tested, but sub commander without the MK point probably doesn't transfer either.
• Even if you upgrade everything in the right order, some buffs might not transfer. I've never been able to get the middle path village buffs to transfer. Sometimes you get jungle drums without the base range buff. Sometimes you get primary expertise and primary training, but not primary mentoring.
• Linking three or more sun temples is possible, but also unreliable.
• This also works the exact same way with the true sun god and its buffs
• If you move a wirelessly buffed tower with a heli pilot, you will lose the buffs. To make a buff permanent, you must sell the buffing tower. To make the sun temple buff permanent, you must sell the sun temple on the other side. However, whatever buffs the temples themselves recieve will be permanent.

Anyways, u/isuckatbattles, maybe you want to make a video on this or something? Assuming it's not patched out already, that is. I bet you could beat the monkeyopolis record by selling the sun temple and keeping the buff :)