Trying to make a "Family tree" for HQ-9 family, what do you guys think ? Am i missing a variant ?
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The problem with a family tree is that we don't actually know the relationship between the major variants (land, land/export, naval).
For example, we know HQ-9B, HQ-9BE, and HHQ-9B all exist, but is the relationship one where they are all successive variants of their respective land, land/export, naval versions in a vertical fashion, or are those three variants all related to each other "laterally"?
Given such major gaps in knowledge exist, it's probably better to actively avoid making images or diagrams, because images for incomplete or inaccurate information can be disseminated too easily.