From robot patrol dogs to AI doctors, Hangzhou is fast producing some of China's most talked-about tech companies. The city is best known as the home of Alibaba and, more recently, DeepSeek. But beyond the headlines, what makes Hangzhou such a powerful engine for innovation? CNA Senior Correspondent Tan Yew Guan speaks with Genevieve Woo about the talent, capital and government support behind one of China's most dynamic tech ecosystems.