Hi Big Boy,
When did we build watch tower in Doklam? You built bunkers in Doklam, we destroyed it, that was what triggered your reaction. If you read Indian sources, it was understood Indians would never build across the ridge in Doka La, but you did, and we destroyed it and it was an accepted norm until a new commander got sent there. In retaliation he tried to destroyed the Chinese road already present in Doklam with two excavators, which triggered the stand off.
China had never intended to occupy Doklam, it was just road building and occasional patrols, due to your agressive actions, we ended up occupying it. There is no such thing as a free lunch, all negotiations require an exchange, in exchange for the occupation of Doklam, we postpone the contruction, it was that simple.
Now regarding us building roads in AP, this had already been refuted by our MOFA, the very same Indian media who said we retreated are now claiming new things again. There are no neutral sources to confirm exactly what transpired over there. Remember this is the very same country who sliced and diced up to 2000sgkms of disputed territory.