A submarine communications cable (or undersea cable) is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. A large chunk of it passes by the Straits of Malacca which is also one of the busiest shipping lanes in the world these days. Image source: Submarine Cable Map.
I do not own Huawei gadgets although I recall using Huawei made modem for Maxis broadband a long time ago. Nonetheless, I have been following up on the troubles that Huawei – the seventh-largest tech company in the world by revenue and a leading pioneer on 5G technology – have been facing with the US market:-