ang, bang!" Just then, there was a sudden knock at the door. 。Xu Xiaoyan was startled and thought someone was knocking on her door. She hurried over and opened it. 。Outside, there was no one. She poke...轉碼失敗！請您使用右上換源切換源站閱讀或者直接前往源網站進行閱讀！ touchstone when selecting them. 。A gold standard can be tested through hammering, which allows one to feel the difference in metals. 。Very soon, a small hammer only half a foot long was handed to Ta...