Semantic Rivers of Chinese Tech

An interactive dashboard that embeds ∼7,800 Shenzhen-attributed PCT patent abstracts into 12 semantic clusters — from AI and semiconductors to biotech and EV — and tracks how each cluster's geographic centre has shifted across the city's ten districts since 2019. Animated ‘river’ curves trace real migration paths derived from filing data, while choropleth and scatter layers reveal where specific tech sectors have grown or relocated within the Pearl River Delta.