It's really hard to judge. Big money certainly doesn't want others to know. However, it can be properly judged, mainly from the perspective of volume. If the stock price continues to rise at the bottom, there will generally be a lot of funds entering. If the stock price starts to rise slightly after continuous heavy volume, it can be said that large funds have entered. However, some funds have been dormant for a long time, half a year, a year or even longer, so it is difficult to judge their entry in quantity. If we can judge that the stock price can't always fall to a certain point at the bottom, we can also judge that there is a lot of money in it, so we can't let others buy goods cheaper than it, so we can't fall. I wish you a successful investment.