There are some good videos

来源: 越王剑 于 2025-08-31 20:03:27 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (258 bytes)

Such as

https://youtu.be/mkqyaBYSgiY?si=hrZ58_VgltEvUhM5

Or you buy some subscriptions from your broker that has it. However, it is just the first step.
 

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• 谢谢！ -Lemmon- ♂ 给 Lemmon 发送悄悄话 (0 bytes) () 08/31/2025 postreply 20:06:05

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