你亮红牌，我亮王牌[允悲]

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Trump Card：noun [ C usually singular ]
UK /ˈtrʌmp ˌkɑːd/ US /ˈtrʌmp ˌkɑːrd/

an advantage that makes you more likely to succeed than other people, especially something that other people do not know about
獨有的優勢，獨門法寶；王牌；絕招

（剑桥词典）