Historical clue formulations

• Province in the names of many Chinese restaurants — 2025-09-13
• Chinese province known for its spicy cuisine — 2024-04-28
• Spicy cuisine style — 2017-05-04
• Spicy Eastern cuisine — 2014-12-17
• Chinese province known for its spicy cuisine — 2014-07-31
• Chinese province where Mao was born — 2010-09-06
• Spicy Asian cuisine — 2009-11-18
• Style of Chinese cuisine — 2009-07-27
• Changsha is its capital — 2007-10-19
• Chinese province — 2006-01-30
• Spicy cuisine — 2004-07-18
• Chinese cooking style — 2002-02-03
• Chinese province — 1997-05-20