Historical clue formulations

• Chinese gambling game invented during the Northern and Southern dynasties — 2026-04-10
• Card game with a Chinese name — 2002-10-20
• Game also known as "sevens" — 2002-04-27
• Card game also called sevens — 2001-07-16
• Chinese gambling game — 1996-11-26
• Card game also called sevens — 1994-03-28