The correlation with the broader market can be seen from the figure below. The gray one is the K-line of the Shanghai Composite Index. It can be seen that the 50etf is slightly weaker than the broader market in the past two months, but the trend is basically the same.
Can hold positions for a long time and will not be tied.
In view of your strong ability to analyze the market, etf is still very suitable for you, just pay more attention to macroeconomics and policies.