Steam: Who Says Explosion Doesn't Count as Decomposition!

Some kind of disaster caused humans at the top of the surface food chain to retreat underground and establish an underground world. Here it is. Human evolution has actually led to symbiosis with fungi, and the humble mushroom has become a source of power. Explosive Mushroom, Bleeding Tooth Mushroom, Sky Blue Mushroom, Snakehead Mushroom, Devil's Cigar... "Fungi are decomposers, mushrooms are just carriers of power." Tang Xiao stood on the head of the steam robot, wearing sunglasses and reading the original sentence from the textbook to the camera. "Is this the speech you made when you destroyed half of the Kingdom of Dying in your last days, and then blew up two-thirds of Fett's defense line, Your Excellency, Bishop of Steam?" Tang Xiao looked at the camera and spread his hands, with fire shooting into the sky behind him. "It's not my fault" "Who says explosion doesn't count as decomposition!"