Shen Hao hadn't expected Flying Dragon to move this fast—he'd only sent word two days ago, and already a reply had arrived. What's more, it wasn't just a brief message via Thousand-Mile Sound, but a document more than a dozen pages long, delivered through the Black Water Plan's information channels.
According to Flying Dragon, setting up an array capable of hot and cold exchange wasn't really all that difficult. If you wanted the place cool, you just added some Five Elements Water-derived frost to the room—so long as you got the proportions right, it wouldn't form actual ice, only cool the room down quickly.
Similarly, if you wanted the room warm, you'd add some Five Elements Fire. Again, as long as you kept control and didn't produce actual flames or excessive heat, you could easily keep things at a comfortable range and get the effect you wanted.
