Sand.ai, a Chinese artificial intelligence (AI) startup specialising in video generation, announced on Thursday the completion of a Series A extension round at $200 million to achieve the unicorn status with a valuation of over $1 billion. For this Series A+ round, the Beijing-based startup attracted a diverse group of investors representing industry capital, government funding, domestic Chinese yuan funds and US dollar investors. Chinese investment firm CoStone Capital and Shenzhen-listed IT in...