How do you count cards in 21?

Hello, I'm an expert in card games, including the popular game of Blackjack, also known as 21. Counting cards is a strategy used by players to gain an advantage by keeping track of high and low cards that have been dealt. It's a complex skill that requires practice and discipline. Let's dive into the process of counting cards in Blackjack, step by step.

### Step 1: Assign a Value to Every Card

The first step in card counting is to assign a value to each card in the deck. A common system is the Hi-Lo system, where:

- The cards 2 through 6 are assigned a value of +1.
- The cards 7 through 9 are neutral and assigned a value of 0.
- The cards 10, Jack, Queen, and King are assigned a value of -1.
- Aces are also typically assigned a value of either +1 or -1, depending on the specific strategy or the count's current state.

### Step 2: Keep a Running Count

After assigning values to the cards, the next step is to keep a running count based on the values of the cards that are dealt. This means that as each card is revealed, you add or subtract its value from a cumulative total. For example, if a 3 is dealt (+1), followed by a 10 (-1), your running count would be 0.

### Step 3: Calculate the True Count

The running count by itself isn't particularly useful. It's the true count that provides insight into the current composition of the deck. The true count is calculated by dividing the running count by the number of decks remaining in the shoe. For example, if your running count is +3 and there are 6 decks remaining, your true count would be +0.5.

### Step 4: Change Your Bets as the True Count Rises

The true count informs your betting strategy. A higher true count indicates there are more high cards (10s, Jacks, Queens, Kings) left in the deck, which benefits the player. Conversely, a lower true count suggests more low cards are left, which benefits the dealer. As the true count rises, you should increase your bets, and as it falls, you should decrease your bets.

### Additional Tips:

- Discipline: Stick to your counting system and betting strategy, even if you experience a losing streak.
- Practice: Counting cards is a skill that improves with practice. Use drills and simulations to get better.
- Casino Rules: Be aware of the specific rules of the casino you're playing in, as these can affect the effectiveness of your strategy.
- Basic Strategy: Before attempting to count cards, you should be well-versed in basic Blackjack strategy.

Now, let's move on to translating the above information into Chinese.

Counting Cards can be broken into 4 steps:Assign a value to every card.Keep a --Running Count-- based off of the values of the card dealt.Use this information to calculate the count per deck or --true count--Change your bets as the true count rises.