Although the South Koreans believed in Jin Xiaoming's strength and thought he was sure to win, to guarantee no unexpected problems arose, they still sabotaged Yan Fei—the, on the surface, very weak looking opponent. This shows just how much importance these South Koreans placed on the showdown; they used so many methods and resources, they simply had to win and could not afford to fail.
Yan Fei even felt certain that if he chose to get off his car and walk now, he would encounter other unexpected incidents on the road that would prevent him from reaching his destination smoothly. The South Koreans' aim was to hold Yan Fei back here, preventing him from reaching Monaco, and thus posing a threat to Jin Xiaoming.