As we have both known the phase cannons are semi dynamical structures which means you can move them from one point to another if it is under the Pylon energy(blue) area.This property will give us lots of new tactic variations.Today we will modernise the fast photon cannon tactic (especially used against Terran at lost Temple).Here we build the second pylon at the entrance of our Terran enemy then wee build Forge at our base location which opens the Technology of building Phase cannons.Then we build our first Phase Cannon at the enemies entrance hidden location.Then build another one here the important point is we must balance the mineral flow to build zealots while cannons are constructing.After two cannon constructed we can move them with the help of Zealot firepower and we add always new phase Cannons at the entrance of the enemy base.You know cannons are superior to micro units of Terran.And also superior agains vulture like units but here we must remember that there is no vulture there are vikings which can by pass the entrance and attack your base as reapers can do.So never forget to protect your base while making this tactic but at the last this tactics surprising effect and rare property will defeat the enemy.