When you tip your hand it's to reveal what you're going to do or let people know about a secret.

当您伸出手时，是为了透露您将要做什么或让人们知道一个秘密。

Sometimes people say: " Don't tip your hand." It means keep your cards or don't let them know what you want to do.

有时人们会说：“不要倾斜你的手。”这意味着保留您的卡片或不要让他们知道您想要做什么。