Holly Chik looks at how people in China are using AI and ChatGPT. A dead woman holds a conversation with her grandson; a surveillance satellite operates without human control; and the PLA considers “cognitive warfare”. In Hong Kong, a stock brokerage with thousands of millennial and Gen Z investors prepares to launch a ChatGPT-powered investment assistant. And hear from nuclear weapons and China tech expert Dr Amy J Nelson on chances for a global AI arms treaty.