Thanks for your reply. I have added the card type using the coding you provided. But I think this causes another problem.
I have done 20 cards English to Chinese. But I don’t get any cards Chinese to English anymore?
Is this because the direction is replaced. Or do I have to study a bunch of English to Chinese to catch up in cards to the Chinese to English?
I am afraid this simply replaced the direction of learning because the English to Chinese words started where I yesterday ended with Chinese to English.
my english is not very good(i am not quite understand your mean)
the below content may be useful
Siblings and Burying
Recall from the basics that Anki can create more than one card for each thing you input, such as a front→back card and a back→front card, or two different cloze deletions from the same text. These related cards are called siblings . Anki tries to ensure siblings are not shown close together, as that’s usually not helpful.
When you answer a card that has siblings, Anki prevents the card’s siblings from being shown in the same session by automatically burying them. Buried cards are hidden from review until the clock rolls over to a new day or you manually unbury them using the “Unbury” button that’s visible at the bottom of the deck overview screen. Anki will bury siblings even if the siblings are not in the same deck (for instance, if you use the deck override feature).
Anki will only bury siblings that are new or review cards. It will not hide cards in learning, as time is of the essence for those cards. On the other hand, when you study a learning card, any new/review siblings will be buried.
If you want to see more than one card of a note per day when learning or reviewing cards, you can stop Anki from burying cards in the deck options.
If you don’t see any reverse cards, it might mean that there’s no Card 2 in the card template window, i.e. the deck was reversed without adding a new card type. Here’s the card template window (front and back side) that contains Card 1 and Card 2 - https://imgur.com/a/SBZMgLX. Or reverse cards (siblings) were buried until the next day - https://imgur.com/OXD5wD1. By default, it’s off and reverse cards might appear in the current session. To quickly test it, just create a new Anki profile, import the above deck and just review cards by pressing Space.
Also the original shared deck has a lot of duplicates, i.e. the first field colored in red. They have the same first field but have different tags, e.g. lesson-1 and lesson-2, and maybe some other fields are different too.