"Yes, that's right."
Mr. Zhang said quickly, pulling a sealed black device, slightly larger than a pack of cigarettes, out of his backpack, along with a notebook and a pen.
"It's mainly two things. First, this is a high-precision environmental data logger."
"We'd like you to take this into the mountains. Once you're inside that 'anomalous zone,' just press the switch. It will automatically record basic data like temperature, humidity, atmospheric pressure, and magnetic field strength, taking a reading every ten minutes."
"You don't need to do anything else with it. Just take it in, stay for a full two hours, and then bring it back out."
Yang Qi took the device. It felt slightly heavy in his hand. The casing was made of waterproof engineering plastic and had a few simple buttons and a small screen.
He glanced at the instructions. It was very simple—just a power switch and a record switch.
"Second, this notebook."
