As soon as Wei sets foot outside the shop with his goods, a thief runs up, snatches the bag out of his hands, and sprints across the street into the park. Give chase, and be ready to maneuver through some fairly heavy civilian foot traffic. Fortunately, as much as it slows you down, it can also slow down the thief. As soon as you get close enough, tackle him to the ground. This will force him to drop the bag. You can then choose to finish him off in a fist fight, or you can pick up the dropped bag and relieve him of consciousness that way.
After dealing with the thief, call Raymond. He tips you off to a point of infiltration of Mrs. Chu’s Golden Koi restaurant: a construction site located across the street from the target building.
The access point is clearly marked by a waypoint. You’ll find that every ledge you need to climb and the gaps you need to cross are marked by green tarps. Eventually you’ll reach a dead end that you can climb up, and cross the top of the bridge that connects the construction site to the Golden Koi.
You eventually reach a rooftop access to the Golden Koi’s kitchen, but Winston and Conroy are there. Conroy still doesn’t trust Wei, and the two men begin discussing the issue outside. Once they’ve left, you need to slide open the skylight on the roof and drop in.
Once inside, you’ve got two-and-a-half minutes to plant the bug in the marked air vent. This starts the extensive Bug Planting minigame. First, you need to unscrew the air vent, which is simple enough.
Next, you need to calibrate the bug you’re about to plant using your smartphone. Using the analog sticks, you need to first calibrate the sensitivity and then the frequency, by moving the analog sticks around the field until the icons turn bright green. Then hold the stick in that position until the calibration meter is filled.
After doing these individually, you then need to calibrate both simultaneously. After the bug is calibrated, replace the air vent. You now need to pick the lock to the rear exit door.
Lock Picking is going to become a recurring minigame, and you’re going to probably be learning under some stress if the bug planting took too much time. Fortunately, the lock only has three pins. Move the pins up slowly until they turn green, using the right analog stick. Then pull the pick to the left using the left analog stick. Repeat this with each pin until the lock is opened. Exit the kitchen to complete the mission.