哦，我之前真的不知道。
据介绍，万庆当铺曾是京城五大当铺之一，始建于清末。[{'character': '据', 'pinyin': 'jv4', 'highest pitch': 10.39, 'lowest pitch': 9.21, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '介', 'pinyin': 'jie4', 'highest pitch': 9.86, 'lowest pitch': 8.95, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '绍', 'pinyin': 'shao4', 'highest pitch': 9.01, 'lowest pitch': 7.16, 'duration': 0.34, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.14}, {'character': '万', 'pinyin': 'uan4', 'highest pitch': 10.56, 'lowest pitch': 4.14, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '庆', 'pinyin': 'qing4', 'highest pitch': 9.76, 'lowest pitch': 7.46, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '当', 'pinyin': 'dang4', 'highest pitch': 9.03, 'lowest pitch': 6.6, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '铺', 'pinyin': 'pu4', 'highest pitch': 12.63, 'lowest pitch': 5.91, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '曾', 'pinyin': 'ceng2', 'highest pitch': 7.63, 'lowest pitch': 5.62, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 7.38, 'lowest pitch': 6.06, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '京', 'pinyin': 'jing1', 'highest pitch': 8.25, 'lowest pitch': 6.06, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '城', 'pinyin': 'cheng2', 'highest pitch': 8.25, 'lowest pitch': 5.84, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '五', 'pinyin': 'u3', 'highest pitch': 7.59, 'lowest pitch': 4.72, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '大', 'pinyin': 'da4', 'highest pitch': 9.16, 'lowest pitch': 8.85, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '当', 'pinyin': 'dang4', 'highest pitch': 9.03, 'lowest pitch': 6.95, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '铺', 'pinyin': 'pu4', 'highest pitch': 12.63, 'lowest pitch': 5.79, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '之', 'pinyin': 'zhiii1', 'highest pitch': 7.78, 'lowest pitch': 5.79, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '一', 'pinyin': 'i1', 'highest pitch': 9.21, 'lowest pitch': 7.78, 'duration': 0.21, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.08}, {'character': '始', 'pinyin': 'shiii3', 'highest pitch': 6.51, 'lowest pitch': 5.51, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '建', 'pinyin': 'jian4', 'highest pitch': 7.35, 'lowest pitch': 5.51, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '于', 'pinyin': 'v2', 'highest pitch': 6.34, 'lowest pitch': 5.47, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '清', 'pinyin': 'qing1', 'highest pitch': 9.6, 'lowest pitch': 6.34, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '末', 'pinyin': 'mo4', 'highest pitch': 10.08, 'lowest pitch': 6.47, 'duration': 0.29, 'prosody hierarchy': '#4'}]