This is a multi-step emergency — you cannot exit China without a valid passport or emergency travel document.
Step 1: Report to local police (110) and get a loss report (报案证明). Step 2: Visit your embassy/consulate in Beijing, Shanghai, Guangzhou, Chengdu, or Wuhan. Step 3: Get an emergency travel document (usually 3–5 business days). Step 4: Apply for a new Chinese exit visa at the Public Security Bureau.

