1. Hong Kong is a part of China, and the history of China is still an elective course in Hong Kong. To some extent, it is because Hong Kong will be autonomous for 50 years, from 1997 to 50 years later, until 2047, the jurisdiction will be completely vested in the China government. So the history elective course is only temporary.

2. Studying history helps students understand the past of the motherland, look forward to the future of the motherland, see the development status of the motherland, better understand the national conditions, recognize the reality, and establish a correct outlook on life and values

3. Studying history is helpful to cultivate patriotic enthusiasm, and it will be helpful to the development of our country in all aspects when we grow up.

4. Every country has a history. Only by understanding a country's past can we learn lessons, carry forward fine traditions, foster strengths and avoid weaknesses, and better realize China's current development strategy.

5. Knowing the history of China can help students see the international situation clearly, combine the past, look forward to the future, and clarify the status of the motherland in the international community.

6. China has a long and splendid history. Studying history is not only to understand history, but also to accumulate profound cultural heritage. On the one hand, it can cultivate patriotic enthusiasm, on the other hand, it can deepen personal cultivation and cultural heritage.

7. From the perspective of Hong Kong, history is not a compulsory course. To some extent, their students have lost their understanding of the glorious past of the motherland and the humiliation of being invaded by Japanese invaders, which is also a loss for them. Moreover, it is an inevitable trend that history will become a compulsory course after Hong Kong's full autonomy in the future.

The order is a little out of order. You can sort it out, from shallow to deep, and then add it if it is not enough. Anyway, that's all.