1, 1. Stroke order: horizontal, vertical, horizontal, dot, horizontal, vertical, horizontal fold, horizontal, dot, left and horizontal. Second, the stroke order: horizontal, horizontal, vertical, horizontal fold, left, dot, oblique hook, dot. Third, stroke order: apostrophe, dot, horizontal sign, apostrophe, holding, horizontal sign, horizontal sign, horizontal sign.

2. Fourth, stroke order: horizontal, vertical, horizontal, vertical, point, horizontal, horizontal, horizontal, vertical. Wu, stroke order: left, vertical, horizontal, vertical, horizontal fold, horizontal. Lu, stroke order: horizontal folding hook, vertical folding, horizontal folding, horizontal folding, vertical folding, vertical folding. Seven, stroke order: point, point, lift, horizontal, vertical hook, horizontal, vertical, left and right.

3. hey Stroke order: horizontal hook, vertical hook, lift, vertical hook, horizontal hook, vertical hook, vertical hook. 9. Stroke order: horizontal, horizontal, vertical, lifting, skimming, horizontal skimming and pressing. Then, the stroke order: horizontal, vertical hook, lift, left, press, horizontal, vertical, horizontal fold, horizontal.

One two three four five six seven eight nine 19th related knowledge.

1, 12345, land, seven, eight and ninety are considered as auspicious numbers in traditional culture and often appear in various ceremonies and festive occasions. For example, in a traditional wedding, the bride and groom propose a toast. The order of a glass of wine is "one, two, three, four, five, six, seven, eight and nine", which means loving each other and growing old together.

2. One, two, three, four, five, six, seven, eight, nine and ten are also common notation in ancient mathematics. These numbers first appeared in Nine Chapters of Arithmetic, which was invented by people at that time for the convenience of calculation. Later, with the passage of time, these numbers gradually became the standard symbols in mathematics and are still widely used in modern mathematics.

3. One, two, three, four, five, six, seven, eight and ninety are also widely used in various literary and artistic creations. For example, these numbers are often used in ancient poems to express the poet's feelings and thoughts about time and space.

4. One, two, three, four, five, six, seven, eight and ninety are also widely used in the commercial field. In ancient commerce, businessmen often used these numbers to represent different amounts and quantities. For example, "one hundred taels of silver" is twelve taels of silver, and "five Bai Wen dollars" is five hundred Qian Wen. The use of these numbers is not only convenient and quick, but also can avoid the occurrence of calculation errors.