The tool, which is able to cut lines at depths of up to 4,000 metres (13,123 feet) – twice the maximum operational range of existing subsea communication infrastructure – has been designed specifically for integration with China’s advanced crewed and uncrewed submersibles like the Fendouzhe, or Striver, and the Haidou series.
I see that your english is a bit wrong. It’s not smart, neither knowledgeable when opinions are presented as facts, that is called dumb and deceived in english