Ruined.

Shi Lang dragged the big cannon out from the lobby and placed it on the main door of the Manor building. Then he aimed the cannon at the artillery outpost and pulled the lever on the cannon, a phaser beam lit up the night like day, in a blink, Shi Lang adjusted the direction and shot again, just in time to hear a loud boom and another shot being fired from his cannon. 

The enemy was shocked, Earlier they heard the cannon fire and thought that there was an enemy, but the silence followed quickly giving them the impression that the enemy has been dealt with. After all, with common sense, who can survive the head-on attack with the cannons?