How to create external links on competitor websites?

ClaraHu said:

When I checked the sources of my peers' backlinks, I found that one of my competitors' backlinks came from another competitor's domain.
In fact, they are also competitors. I checked those pages and found no anchor text pointing to them. Most of the backlinks he made on competitors are from multilingual countries based on this website. How did he do it? Is there really a way to make backlinks on the other party's website without their consent?

Does anyone know? Thank you very much for your answer?！

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Nikolaos said:

No there isn't a way to get backlinks from your competitors without their consent. The people who have given backlinks to their competitors either are very stupid or they've gotten a huge amount of cash in order to do this.

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