What is the Chinese name that has a 31 average?
{'header': ['Rank', 'English title', 'Chinese title', 'Average', 'Peak', 'Premiere', 'Finale', 'HK viewers'], 'page_title': 'List of TVB series (2008)', 'section_title': 'Top ten drama series in ratings', 'caption': 'Highest-rating drama series of 2008', 'rows': [['1', 'Moonlight Resonance', '溏心風暴之家好月圓', '35', '50', '33', '38', '2.22 million'], ['2', 'D.I.E.', '古靈精探', '34', '42', '32', '37', '2.14 million'], ['3', 'Wars of In-Laws II', '野蠻奶奶大戰戈師奶', '33', '41', '33', '32', '2.07 million'], ['4', 'Forensic Heroes II', '法證先鋒II', '32', '37', '33', '34', '2.04 million'], ['5', 'Catch Me Now', '原來愛上賊', '32', '38', '31', '33', '2.00 million'], ['6', 'The Silver Chamber of Sorrows', '银楼金粉', '31', '40', '29', '34', '1.93 million'], ['7', 'Love Exchange', '疑情別戀', '30', '35', '28', '32', '1.91 million'], ['8', "Survivor's Law II", '律政新人王Ⅱ', '30', '37', '26', '31', '1.88 million'], ['9', 'A Journey Called Life', '金石良缘', '30', '35', '28', '32', '1.88 million']]}