The curb can't provide the strong grip of the asphalt surface if you take the corner while pressing on it.
Exiting T18 is critical because it's followed by a long straight, and a poor exit can cost you a lot of time here.
Qin Miao's exit was impeccable, cutting the apex precisely and using the curb fully upon exit. The left tires were just at the edge but didn't cross the white line.
Then, T19 was almost not a corner; after passing the DRS detection point, DRS was activated, and it was full throttle to the finish.
...
"Great! Next up is Qin Miao. Qin Miao's speed in the last sector of Q3 is quite impressive. Both of the first two sectors were green and only 0.133 seconds behind Hamilton, who is currently in first place. The gap is minimal!"
The director then switched the camera to focus on Qin Miao.
