When it comes to wing upgrade, it's definitely a puzzle in the sword of kings, because it has a great chance of failure, and it can't be upgraded with materials. Recently, many players are asking about the skills of wing upgrade. Today I'll give a unified answer.
Before upgrading, we need to collect materials, and here we need to collect feathers. In the game, players only have 8 free opportunities to collect feathers every day, which greatly limits the speed of everyone's improvement. If the opportunity is limited, we should make good use of it. We need to carefully observe the feather color in the collection. Different colors mean that the quantity you collected is different.
The most common feathers are green and purple. Among them, green feather is more common and its grade is the lowest. At this time, we must not directly pick, you can refresh a few times after the purple light feather pick, that is the number of ten feathers. If there are red feathers in refresh, it means that you will collect 20 feathers, so the number difference is big after 8 times of comparison. However, refreshing needs money, which depends on your strength.
After the material is obtained, the wings can be upgraded formally. The probability is basically successful at this time, and the difficulty will increase next time. If it continues, it will be a waste of feathers. Players with blue diamonds can improve the success rate of the next upgrade. If the success rate is high, the possibility of the next upgrade will increase. At this time, the effect will be guaranteed by putting the feather in.
If the blue diamond is enough, I suggest you improve the success rate before upgrading, otherwise too many failures will lead to waste a lot of feathers. When the number of feathers needed to upgrade later is more, it will not be so easy.