Shu XinYi was making a final check of all the materials needed for the safety clothes for miners, this world had limited options on what materials he could use, so he had to maintain a balance between expenses and quality. Managing a mine was much more difficult than being a merchant, and Shu XinYi had to do it for the sake of disrupting this world as well, so he couldn't just hand over the responsibility to others.
Sighing, Shu XinYi set the quill down and collected all the parchments for the material orders. For Shu XinYi, dealing with protagonists was never the tricky part, but handling the world beyond the protagonist(s) without creating a negative impact on the world is what Shu XinYi finds difficult. That's why he has to be careful of his actions when dealing with the protagonists.