Because the maximum limit for a Thermo-baric Bomb was only ten at any time, Zhang Yanhang simply fused a single Thermo-baric Bomb +3. However, he hadn't anticipated the immense power of the Thermo-baric Bomb +3; it ended up enveloping the entire cave.
Zhang Yanhang had originally thought that a Thermo-baric Bomb +3 might cover an area of a hundred meters or so, which is why he had intentionally aimed at the Crimson Iron Flying Ants and the Crimson Iron Soldier Ants at the back. His plan was to use the Thermo-baric Bomb +3 first, then follow up with regular Thermo-baric Bombs to blast the Crimson Iron Worker Ants.
But to his utter surprise, just one Thermo-baric Bomb +3 took care of all the Crimson Iron Flying Ants, Crimson Iron Soldier Ants, and Crimson Iron Worker Ants.
"Now that I think about it more carefully, maybe a regular Thermo-baric Bomb could already cover a hundred meters, but the Thermo-baric Bomb +3 covered thousands of meters, engulfing the entire cave."
