If you want to see the backpack on your back, you have to place the backpack item in your inventory, NOT in the hotbar.
如何把背包背在背上?
如果你想看到背上的背包,你必须把背包物品放在你的背包储物袋中,而不是放在热栏里。
If you can't deselect your backpack, stop holding it for a moment to put it in your inventory.
如果您无法取消选择您的背包,请暂时停止持有它以将其放入您的库存中
Now that you have your backpack in your inventory it will now be visible!! Try all the designs you want and choose the one you like the most. Have fun!!
现在你的背包在你的库存中,它现在可以看到了!!尝试您想要的所有设计,然后选择您最喜欢的一个。玩得愉快!!