First of all, it needs to be clear that the investment market is risky and ups and downs are normal. Your 16 1607 Rongtong Chaochao and 16 1604 Rongtong Shenzhen Stock Exchange 100 may be affected by market fluctuations in the near future, leading to a decline. In this case, there are several coping strategies to consider:

1. Stay calm: In the face of investment losses, it is very important to stay calm and rational. Impulsive decisions may lead to greater losses.

2. Analysis of the market: in-depth understanding of market trends, policy changes, industry trends, etc. And analyze the reasons leading to the decline of the fund, so as to better formulate coping strategies.

3. Set a stop loss point: Before investing, set a stop loss point for yourself. When the fund falls to the stop loss point, sell it in time to avoid greater losses.

4. Adjust the investment portfolio: adjust the investment portfolio according to market conditions to spread investment risks. For example, some funds can be transferred to other funds or investment products with better performance.

5. Patience: Market fluctuations are normal, and sometimes waiting may be the best strategy. In the absence of obvious deterioration of fundamentals, we can consider waiting patiently for the market to rebound.

6. Seek professional advice: If you are not sure how to deal with it, you can seek professional investment consultants to provide you with personalized investment advice.

Please note that the above suggestions are for reference only and do not constitute specific investment suggestions. Investment decision should be based on your comprehensive consideration of your own risk tolerance, investment objectives, investment period and other factors.