The AGM-114 Anti-Tank Missiles, after undergoing a Drone Upgrade and being enhanced twice by the Mysterious Power, saw a significant boost in their power, particularly their armor-piercing capability, which elevated to unbelievable levels. However, their power was still insufficient to penetrate the hard body of the Mechanical Monkey.
The Mechanical Monkey, whether due to a Bug in its program or by its original design, didn't move an inch in the face of incoming Missiles, making no attempt to dodge. Instead, it would fire Energy Beams to destroy any detected assailant. While this showed off its formidable Air Defense capabilities, it also gave Yan Fei a method to counter it.