After tinkering with it a few times, I finally figured it out. When using a computer during the live stream, I can intuitively analyze the cryptocurrencies that my friends need to understand. In the live stream, everyone can see the K-line chart, which makes it very intuitive to explain. I can also teach everyone how to read points, and later they can look on their own.

It's better to rely on oneself than to ask others for help. To forge iron, one must be strong oneself.