It's just a very simply version. Color even not very correct. I didn't write the price expand or other condition. It's welcome if other guys want to write a full version.
If this kind chart is not from western. Then I think it's qianlong platform's indicator. (QianLong means Money Dragon) If you know the origin of tower line pelease comment to tell me. :3
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From the last 2 and 3 bars. You can see the blue color is not aligned. The aligned is better.