The calligraphy works for National Day official script are as follows:

1. Required materials and tools: Before starting, prepare the following materials: calligraphy brush; rice paper or calligraphy paper; ink or Chinese painting paint (black or red); towel and water (used to control the concentration of ink); water cup and ink tray.

2. Prepare calligraphy tools and paper: Make sure your brush is clean, and towels and water cups are ready. Ink or paint should be placed in an ink tray and the concentration of the ink should be gradually adjusted with water to facilitate writing. Have a blank area ready for your work on rice paper or calligraphy paper. You can choose a suitable paper size and layout.

3. Write "Happy National Day": Using the writing style of official script, start writing the blessing "Happy National Day". Official script is a beautiful and smooth calligraphy style, characterized by horizontal and vertical lines and graceful strokes. Pay attention to the order and strength of strokes when writing to maintain stability and elegance in writing.

4. Use ink strokes and embellishments and decorations: You can use thick ink or red pigment to outline the font to emphasize the lines and structure of the calligraphy. If necessary, you can add some decorative elements around the work, such as flowers, flags or other National Day patterns, to add visual appeal.

5. Drying and display: After the work is completely dry, you can frame it or display it in an appropriate place to display your National Day calligraphy works. When writing official calligraphy works for the National Day, you should try your best to write with care to convey your wishes and respect for the National Day.

The significance of National Day

1. Celebrating the independence or establishment of a country: National Day is usually a day to celebrate the independence or establishment of a country. It is a day of historical and political importance that commemorates key events in the nation's history.

2. Unite the country: National Day helps promote national unity and cohesion. On this day, people usually forget about political differences and social differences and unite under the national flag, emphasizing the unity and harmony of the country.

3. Emphasize national culture and values: National Day is a good opportunity to spread national culture and values. On this day, the country's traditions, history and culture are usually valued and emphasized to pass on and promote the country's cultural heritage.

4. Gratitude and remembrance and stimulating patriotic enthusiasm: National Day is also a time to be grateful. People review the development of the country and commemorate those who have contributed to the country’s independence and prosperity, including martyrs, political leaders and Ordinary citizens. National Day helps inspire people's patriotic enthusiasm, making them love their country more and make positive contributions to the country's future development.

5. International exchanges and celebrations: National Day can also be an opportunity for international exchanges. National leaders will meet with foreign leaders to demonstrate the country’s friendly and cooperative relations. The National Day is usually accompanied by various celebration activities, such as military parades, fireworks displays, concerts, cultural exhibitions, etc. These activities provide opportunities for celebration and entertainment and enhance the atmosphere of the National Day.