After two rounds of trumps you just switch to hearts, and when East ruffs he has to lead into the club tenace. 清两轮将牌，出红心，当东将吃后，他只能出到你的梅花间张。
The instant spade return into dummy`s tenace wouldn`t normally seem a sound or promising play. 直接的黑桃攻向明手的间张通常看起来是不好的或没指望的打法。
Therefore, we developed the most convenient and appropriate to the human body:"TENACE".It is extraordinarily easy to use.TEANCH ultimately minimizes the embarrassing condition you may meet with. 有鑑于此，TENACE以最符合人体力学的模式，展现出划时代独特的便利性灯座，彻底排除您换装灯炮时的窘境。
