If you want to get stronger quickly, krypton is very serious.
Don't pursue ranking, just graduate from the game, just be a little liver.
Because the game itself is free, compared with some card-counting and buyout games, the in-game expenses will be more. There are reinforcement, carving and tripod systems in the game, so you need to collect, strengthen and develop these things step by step. Of course, there are two kinds of free games, either krypton or liver. If you want to fill the current version of graduation quickly, you must determine krypton, helicopter bag, VIP, pass, reinforcement materials, gold coins and initial fare. If you want to play slowly and improve yourself, then you don't need too much krypton. It takes more than 20 hours to reach level 50, and then it takes about a month to start playing the current version slowly.