How to fool the humans of this world wasn't important to Fang Zheng, what was important was that he finally fulfilled his wish—that was to endow the Zerg with EMP capabilities.
After successfully capturing Muto back to Skull Island, Fang Zheng had a discussion with Lulana, who presented him with three upgrade options.
The first option was to integrate Muto directly into the Swarm as one of the Zerg's military species, the advantage being it could retain all of Muto's capabilities and provide the Swarm with a completely new type of warrior.
The second option was for the Explosive Mosquitoes to absorb Muto's abilities, then win by sheer numbers. In this way, when the Explosive Mosquitoes rushed towards the enemy to self-detonate, they could not only inflict substantial damage but also release EMP to weaken their shields or electronic abilities.
The third option was to integrate Muto's genes into the Flying Dragons, allowing them to use EMP in battle and entangle the enemy.