Export restrictions imposed by the US and its allies on China have "accelerated AI development" in the country, according to legal professor Angela Zhang. She says China-based DeepSeek, which has sent shockwaves through the tech world with its new AI chatbot, was forced to "innovate" and train its model "more efficiently" because it had limited access to Nvidia chips. DeepSeek claims to have produced its model with similar capabilities to OpenAI's for just $5.6 million. SOUNDBITES