This time it is Michael O'Brien, later to become a friend of Stark's and the second man to wear the Guardsman's armor. Iron Man flies to O'Brien's rescue, clad in an older armor, saves O'Brien, thwarts the Mandarin's attempt to bomb the United States, and for a second time bests him in personal combat and then destroys his castle again. Perhaps due to the effect of the Mandarin's mental domination ring on him, Iron Man does not take the Mandarin into custody, but allows him to remain free. The Mandarin later schemes to turn the Great Vibranium Mound of Wakanda into Type II Vibranium, which destroys the molecular cohesion of metals. He also tries to destroy China's entire rice crop with radiation in an attempt to force a starving nation into war. In the second of these plots, the Mandarin encounters James Rhodes during Rhodes' custodianship of the Iron Man armor. Heart of Darkness When Stark tries to set up a branch of Stark Enterprises in Hong Kong, Iron Man and the Mandarin once again come into conflict. The Mandarin has taken the name of Zhang Tong, and had become a financial leader in Hong Kong. As Tong, he controls a number of government officials and industry leaders of Hong Kong. The Mandarin thwarts all of Stark's attempts to set up a business branch, even resorting to murder. The Mandarin now employs a group called the Hand to do his dirty work. When on a mission, a Hand member is allowed to take one of the Mandarin's rings and use its powers. As a precaution, if the Hand member is to be captured, he will fanatically try to kill himself. If the Hand member is to be killed or knocked out, the ring will automatically teleport back to the Mandarin. The Mandarin's agents kidnap James Rhodes and several of Stark's other employees, forcing Iron Man into single combat in exchange for their lives. Iron Man defeats the Mandarin once again, and helps Stark's employees escape the Hand. The Mandarin's minions are left without their weapons when their master is knocked unconscious, causing his rings to teleport back to him automatically and leaving them unarmed and unable to stop Stark's employees from fleeing. At one point, during a period in which the then thought-dead X-Men had disbanded, the mutant heroine Psylocke passes through the mystic portal known as the Siege Perilous.