最近出现了很多非法房屋租赁问题。
强化房屋租赁登记备案。[{'character': '强', 'pinyin': 'qiang2', 'highest pitch': 9.41, 'lowest pitch': 7.73, 'duration': 0.31, 'prosody hierarchy': 'null'}, {'character': '化', 'pinyin': 'hua4', 'highest pitch': 10.61, 'lowest pitch': 8.79, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'character': '房', 'pinyin': 'fang2', 'highest pitch': 8.83, 'lowest pitch': 7.52, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '屋', 'pinyin': 'u1', 'highest pitch': 10.32, 'lowest pitch': 8.83, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '租', 'pinyin': 'zu1', 'highest pitch': 10.51, 'lowest pitch': 10.15, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '赁', 'pinyin': 'lin4', 'highest pitch': 10.48, 'lowest pitch': 7.88, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '登', 'pinyin': 'deng1', 'highest pitch': 9.97, 'lowest pitch': 7.88, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '记', 'pinyin': 'ji4', 'highest pitch': 9.54, 'lowest pitch': 7.55, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '备', 'pinyin': 'bei4', 'highest pitch': 9.24, 'lowest pitch': 8.12, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '案', 'pinyin': 'an4', 'highest pitch': 8.89, 'lowest pitch': 5.94, 'duration': 0.27, 'prosody hierarchy': '#4'}]