他是我们班的同学，你怎么认识他的？
这就是李昌钰，勤奋、认真，而又亲切、幽默。[{'character': '这', 'pinyin': 'zhe4', 'highest pitch': 10.95, 'lowest pitch': 8.92, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '就', 'pinyin': 'jiou4', 'highest pitch': 9.44, 'lowest pitch': 8.04, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 8.76, 'lowest pitch': 8.04, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '李', 'pinyin': 'li3', 'highest pitch': 8.15, 'lowest pitch': 5.13, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '昌', 'pinyin': 'chang1', 'highest pitch': 9.9, 'lowest pitch': 5.14, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '钰', 'pinyin': 'v4', 'highest pitch': 10.02, 'lowest pitch': 8.46, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.27}, {'character': '勤', 'pinyin': 'qin2', 'highest pitch': 8.38, 'lowest pitch': 6.91, 'duration': 0.32, 'prosody hierarchy': 'null'}, {'character': '奋', 'pinyin': 'fen4', 'highest pitch': 9.8, 'lowest pitch': 7.54, 'duration': 0.31, 'prosody hierarchy': '#2'}, {'character': '认', 'pinyin': 'ren4', 'highest pitch': 9.43, 'lowest pitch': 7.24, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '真', 'pinyin': 'zhen1', 'highest pitch': 9.71, 'lowest pitch': 7.24, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.12}, {'character': '而', 'pinyin': 'er2', 'highest pitch': 6.59, 'lowest pitch': 6.23, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '又', 'pinyin': 'iou4', 'highest pitch': 7.23, 'lowest pitch': 6.45, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '亲', 'pinyin': 'qin1', 'highest pitch': 9.26, 'lowest pitch': 6.45, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '切', 'pinyin': 'qie4', 'highest pitch': 9.26, 'lowest pitch': 6.93, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '幽', 'pinyin': 'iou1', 'highest pitch': 9.46, 'lowest pitch': 6.93, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '默', 'pinyin': 'mo4', 'highest pitch': 10.5, 'lowest pitch': 6.61, 'duration': 0.33, 'prosody hierarchy': '#4'}]