 The limited effectiveness of these security measures was demonstrated when, on the morning of June 1, Chai Ling and Feng Congde fell victim to an attempted kidnapping by Wu Lai, in which Headquarters guards took an hour to arrive at the scene.The kidnapping was halted, however, once Li Lu confronted Wu, whereupon Wu fled.Considering Chai’s Mandarin version, security lines were only established around the Headquarters and its associated structures with leaders, not around the entirety of the square with the masses.