There is no warehouse or backpack with props, but there is a backpack with squares. You can get them after defeating BOOS. Dong Jun can add 6 squares, Arnold can add 7 squares, and the number of squares that can be used in the backpack is limited. At first, there will be two squares. Opening the third one costs 1 1,000 gold coins, which is not expensive, but for non-RMB players, only the third one can be opened. Therefore, two backpacks (the first one has a backpack at the beginning) should use a backpack with many grids, but it is best to use Arnold's or Dong Jun's backpack at the beginning, and you can use a better backpack later.