in other transmigrator manwha, FLs monetize basic modern day commodities familiar to everyone (ie cosmetics, cultural food, appliances.) this manwha differs bc the FL has a higher education/degree in mechanical engineering; her skill set from past life enhances her skills now.
Usually, past life knowledge is a tool for FLs to "invent" something from the modern world as a convenient cash grab. (and this manwha's FL background in engineering makes it alot more believable she can draw out washing machine blueprints)
its cool her past life was engineering because in her current one, she was already inventing magitech. (opposed to the main tropes of FLs being a normal office worker before that "invents" something on the side to make cash)
omg I love that the mc's strength in this story is unique, like her past life memories are actually useful