Hu Ma, however, didn't pay much attention to what the workers thought. He only noticed that after Zhou Datong learned this trump card, all the workers in the Manor practiced their skills with more dedication. He was quite satisfied with their performance.
He didn't only teach Zhou Datong. After carefully studying those oil lamps, he called Zhou Liang in. "There are some medicinal herbs on this list," he said. "When you're free, go into town and purchase them."
The first four oil lamps had already been used up. If he wanted to teach others, he needed to prepare more lamp oil.
The materials needed to prepare the lamp oil were not common; they were expensive, and some were extremely difficult to find on the market.
So, in the Shousui man's Path, preparing an oil lamp was a significant undertaking.