Why are players always automatically added

When I mouse click anywhere it will bring up a window to add plays

Soon dozens of players were added automatically

Dear jiading-miao,

have you entered a search term into the top search box - where is says 搜索 ?
Once you start entering an instrument name there, the results will be narrowed down to the instrument you are looking for. Then confirm your choice either with the mouse click or by hitting the Enter key.
All these 空手演奏者 mean that you have not chosen an instrument for the player yet “player with empty hands”.