Reviewing Bitcoin:

Last month, the monthly opening price for Bitcoin was around 70290, the lowest price was around 66800, the highest price was around 99500, and the closing price was around 96400. The amplitude reached 47%, and the increase was as high as 37%. This is second only to the increase in Bitcoin in February this year.

Now, regarding the weekly chart, the opening price last week was around 97900, the lowest price was around 90700, the highest price was around 98800, and the closing price was around 97100, with an overall amplitude of 9%.

Looking at the 3 to 5 day chart, Bitcoin's short-term fluctuations are also considerable, with recent fluctuations around 3-4%. In the short term, 98000 is a very strong resistance level for Bitcoin. Only if Bitcoin rises above this level will it have the chance to launch an attack towards 100000. If it cannot rise above this level, the probability of continuing wide fluctuations is still very high.

Finally, regarding operations: Personally, I believe that for long positions, it is most prudent to enter around the support at 94000 and 91000 for Bitcoin, as these two support levels can withstand testing. Mainstream long positions are relatively safe to enter at these two levels. As for altcoins, it is better not to reference Bitcoin recently and to focus on Ethereum instead.