First, iI couldn’t come up any idea about how to deal with this project (〒▽〒). During the class, I thought I could do something relative to mechanical equipment, like making a electronic greeting card or deconstructing my mobile phone（─.─||). However, because I am short of money I can’t afford the materials.
Finally, I found my sister’s broken saving pot(cannot work well, sometimes even cannot work), I wondered if I can fix it, even if i can’t fix it, I can also know the structure of the saving pot.
Now, I have taken the saving pot apart and knew why it’s broken, it’s time to know its inner structure.