There was only a burst of alarm. Dozens of white Yamaha police motorcycles drove down the corridor. They were divided into two neat columns, leading a red flag HQE behind them slowly to the direction of the Yanjing Letter and Visit Bureau with double flashes, followed by a few Buick Onkley cars with the same double flashes.

This red flag HQE has appeared in the military parade before the 60th anniversary of the National Day. As the highest-level national protocol vehicle, it contains unspeakable dignity both in appearance and in detail. Today, however, the black windows of the car are closed and the curtains on both sides are pulled down,...