Maybe the reason it is not done right is that the shrimp was frozen and not fresh, so that it wouldn't open no matter how the chef fried it up, and the chef could end up overcooking it without even realizing it.
不對的原因可能是蝦子經冷凍過，不新鮮，因此怎麼炸也炸不開，往往炸得過熟過硬也不知道。