Historical development of crossword puzzles
As the name implies, crossword puzzles are made by puzzles and riddlers. They must be smart and then solved by riddlers. In China, it has a long history, various varieties and endless changes. It has always been loved by literati, and it has also been used by political struggles and Machiavellian tactics. In modern times, crossword puzzles, as a high-level entertainment activity, are more popular with the masses.
One of Bao Zhao's crossword puzzles in the Southern Dynasties and the Song Dynasty was in two forms, four heads, eight heads, four heads, four heads, four heads, four heads, five-eight-eight-eight-eight-eight-four-four-four.