1, influenced by European and American markets, the Hang Seng Index opened higher and went lower in early trading, often influenced by US stocks in the evening.

2. The influence of SSE 50. There are many H shares of companies listed on the SSE 50 in the HSI, which are related.

3. Unexpected events, such as the situation on the Korean Peninsula some time ago.

4. The influence of the European German stock market index and FTSE 100 in the UK in the afternoon.

5. For the news of constituent stocks, it must be remembered that the Hang Seng Index is the largest constituent stock (Tencent).