499 Making a Water Wheel (3)

Parker naturally agreed to her request. After finishing his breakfast, he did as she asked and headed to the mountains to look for wood.

Bai Qingqing came up with a rough blueprint in her head while waiting for him.

The theory behind a water wheel was simple, and once she understood it, they would definitely succeed.

The morning passed, and Parker returned with the material that Bai Qingqing wanted most—bamboo.

The two of them sat under the tree at the house that shielded them from the wind and got to work.

"Parker, make an axle first."

Bai Qingqing drew a simple diagram on the ground before drawing a thick line for the axle. She pondered and said, "This axle has to be hard enough to withstand large amounts of force. What should we use to make it?"

"Stone," Parker replied without hesitation, despite not knowing what Bai Qingqing wanted to make.