Plain boiled water turns into coffee in an instant-stirring bar coffee bar

How to make a cup of instant coffee dissolve quickly and have a uniform flavor? Chinese designers LiCheng and ZhangXun came up with the idea of using their fingers, but now a designer named HeoJeongIm has brought another solution, combining coffee powder and mixing bar into one, stirring bar coffee bar (CappuccinoCoffeeStick), the end of which is coffee powder condensed together in some way, so, like magic. Any cup of boiled water can be turned into fragrant and delicious coffee under your stir.