This is a chinese Zither, it is played by pulling strings and music will be created. It has seven different strings same number as the ones that we can find nowadays.
Now an instrument of similar usage is the guitar.
Number of strings
The way to play the instruments ( holding)
And the materials used to make the instruments
This is the Duan ink stones where ink is placed there before the user use it to write. The differences of the history and present writing material is where the 1) ink is placed ( the ink tube in pens and the duan ink stone) 2) The way of writing 3) The portability