@Dik Liu you can link cards to each other! This isn't exactly the same as mirroring, which is also something you can do but I don't have as much experience with that so can't explain that process. But if you simply want to avoid duplicating cards and be able to quickly access the original card from another place, attaching the original trello card should work!
Hello Community! My name is Brittany Joiner and I am a Trello enthusiast and Atlassian Community Leader. I'll be sharing with you a series of videos with my top tips on how to best use Trello...
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