Where is the latest cf mobile game redemption?

Ordinary weapons are exchanged in the upper left corner of the mall, and heroic weapons are exchanged in the lower left corner of the warehouse weapons page. CF mobile game, namely "Crossing the Fireline: King of Gunfight", according to the game official website, the entrance to upgrade and exchange ordinary weapons is in the upper left corner of the game mall interface, and six weapons are exchanged step by step according to the quality of white, green, blue, purple, orange and hero; The level exchange of hero weapons is located in the lower left corner of the warehouse weapons display page, where the exchange icon is displayed, and the latest hero weapons are exchanged step by step.