The fourth type was an irrigation farming tool, a human-powered turning vehicle, also known as the dragon bone cart. Its operating principle was similar to the chain rotation of a bicycle, but with a long slot in the middle. Powered manually, it turned wooden chain paddles that lifted water upwards and discharged it.
This farming tool was designed to lift water from the lower levels of a lake or river to the higher water channels, irrigating the fields along the channels. Similarly, there were also cylinder vehicles that utilized water power. Xiulote had already sketched out the designs, preparing to first test-produce them by the northern banks of the Lerma River.
"Your Majesty, your Divine Revelation's wisdom is truly as brilliant as a gem!"
Chalape followed closely behind, smiling and offering his compliments.