1. National Day is celebrated on October 1st in China.

2. China celebrates its National Day on the first day of October.

3. The National Day of China falls on October 1st every year.

4. On October 1st, we celebrate National Day in China.

5. October 1st is a special day for China, being the National Day.

这些句子都准确地表达了“10月1日国庆节”的意思，可以根据具体语境选择合适的句子。