How do heroes count cards when they kill Liu Bowen

First of all, you should know that all the cards are touched from the top of the pile.

Then you can see clearly that the divination window is divided into two rows, the upper row is the default, and the top five cards in the current pile are empty by default. If you drag the card down to the space below, it is equivalent to putting the card at the bottom of a pile and temporarily out of reach.

I don't know why you said that 12 will be empty after it is moved to 34, because it is reasonable to say that if you only operate the first five cards, you can only exchange these five cards, and there should be no spaces. If you say there is a space, you drag the card to the bottom (the bottom of a pile). Note that if you do this, the spaces in the first line don't count. For example, ABCDE, you drag BC to the bottom. There are still patterns on it. No matter how you put ADEs, you can put it in the first three squares or in the last three squares. It only records your order, which means that the last five cards are ade (the last two are unknown).