After probing the route, he concluded that entry into the Presidential Palace was impossible and heard about Number Thirteen's unspeakable past. This reconnaissance trip indeed yielded considerable results.
Gao Yang wasn't a psychologist, moreover, even if he were a master of psychology, he probably couldn't unravel Number Thirteen's psychological knots. The human heart is the most complex thing; as the saying goes, a heart ailment needs medicine of the heart to cure it. But Number Thirteen killed his own medicine for the heart with his own hands, how can that be cured?
