REWARDS - Respect
You first need a camera before you can head to the planning department building. Head north along this main road to the red blip to find some tourists. Kill one and pick up the camera he drops, then get a car and go to the building. Head inside once you're there.
Make sure you have no visible weapons out before you head inside. Approach the front and the secretary asks you a question. Press right on the D-Pad, then left for the next question and right for the last one. Once that's over with, head to the yellow blip and head to the top floor.
You can't photograph the blueprints with the guard there, so head downstairs to the Document Depository. Shoot the air thing in the back of the room and the fire alarm will go off. Run back upstairs and take a photo of the blueprints. You'll view a short cutscene and you'll now have 2 stars.
Go all the way to the bottom floor, stopping to kill the security on almost every landing, and go out the front door. You should have a good number of stars now (around 4-5), so hop in a car and quickly go back to The Four Dragons to finish the mission. Respect earned.