Mobile World Congress in Barcelona might be a European tech show, but for the past few years, the event has largely been dominated by Chinese phone companies such as Xiaomi and Honor. This year, they were joined by tech giant Alibaba, which launched its Qwen smart glasses at the show — and having tried them, all I have to say is, Meta should watch its back.The Qwen glasses are among the first wearable devices Alibaba is building on top of its Qwen AI family of large language models, and the company brought two different models to the MWC. The first pair,…