Journey to the West is a card game with Journey to the West as the theme. There are various funny and familiar characters in the game. Today, the editor is going to tell you the role of peaches in the game. As the monkey’s favorite fruit in the original work, what’s the use of peaches in this game?

Instructions on the function of the peaches in Journey to the West:

　　In the happy Journey to the West, there are three types of peaches: three thousand-year-old peaches, six thousand-year-old peaches and nine thousand-year-old peaches. Five three thousand-year-old peaches can evolve into a six thousand-year-old peach, and six six thousand-year-old peaches can evolve into a nine thousand-year-old peach.

　　The function of the peach can be summarized in a simple sentence, which is to increase the experience of the card. Three thousand years of peaches can increase the experience value by 10,000, six thousand years of peaches can increase the experience value by 50,000, and nine thousand years of peaches can increase the experience value by 300,000. The three thousand-year-old peach and the six thousand-year-old peach can both be obtained by spending a certain amount of physical strength in the peach garden. The peach garden is divided into three levels, namely the ordinary level, the difficult level and the nightmare level. Among them, the ordinary level only drops the three thousand-year-old peach, and the difficulty level and the nightmare level will drop the three thousand-year-old peach and the six thousand-year-old peach.

　　When players swallow peaches, they still need to consume certain gold coins, and the higher the level, the more gold coins they need. The editor suggests that when players upgrade cards, it is best to upgrade the cards to the full level at one time, so that they can save a lot of gold coins.