你知道吗，我去年写了一封信给他。
那封古老的信也奋如黄鹤，至今没有一点回音。[{'character': '那', 'pinyin': 'na4', 'highest pitch': 9.78, 'lowest pitch': 8.88, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '封', 'pinyin': 'feng1', 'highest pitch': 10.26, 'lowest pitch': 8.88, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '古', 'pinyin': 'gu2', 'highest pitch': 10.35, 'lowest pitch': 8.25, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '老', 'pinyin': 'lao3', 'highest pitch': 10.64, 'lowest pitch': 6.43, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 7.11, 'lowest pitch': 6.4, 'duration': 0.11, 'prosody hierarchy': 'null'}, {'character': '信', 'pinyin': 'xin4', 'highest pitch': 9.19, 'lowest pitch': 6.61, 'duration': 0.3, 'prosody hierarchy': '#2'}, {'character': '也', 'pinyin': 'ie3', 'highest pitch': 7.02, 'lowest pitch': 6.14, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '奋', 'pinyin': 'fen4', 'highest pitch': 8.75, 'lowest pitch': 7.21, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '如', 'pinyin': 'ru2', 'highest pitch': 7.96, 'lowest pitch': 6.32, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '黄', 'pinyin': 'huang2', 'highest pitch': 7.96, 'lowest pitch': 5.41, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '鹤', 'pinyin': 'he4', 'highest pitch': 8.74, 'lowest pitch': 4.64, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.25}, {'character': '至', 'pinyin': 'zhiii4', 'highest pitch': 9.37, 'lowest pitch': 7.39, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '今', 'pinyin': 'jin1', 'highest pitch': 9.6, 'lowest pitch': 7.39, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '没', 'pinyin': 'mei2', 'highest pitch': 9.51, 'lowest pitch': 7.64, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 9.12, 'lowest pitch': 7.25, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '一', 'pinyin': 'i4', 'highest pitch': 8.45, 'lowest pitch': 6.85, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '点', 'pinyin': 'dian3', 'highest pitch': 6.67, 'lowest pitch': 4.93, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '回', 'pinyin': 'huei2', 'highest pitch': 7.47, 'lowest pitch': 5.83, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '音', 'pinyin': 'in1', 'highest pitch': 9.29, 'lowest pitch': 7.47, 'duration': 0.26, 'prosody hierarchy': '#4'}]