The mystery portal

A long long time ago There was a photographer, a Chinese photographer that lived in a temple called the Letty. One day he followed two guards too see where they go in their lunch brake. So he walked behind them and hid behind the wall and then looked back and they were gone... So the next day he followed them again and this time hid behind the wall but also looking at the guards at all time with his camera and then saw them walked through the wall and just before they walked right through he took a photo...