BEIJING — So many people in China are rushing to try the OpenClaw artificial intelligence tool that they're driving up prices for secondhand Mac computers. That's according to Jeremy Ji, chief strategy officer and general manager of international business at ATRenew , a used consumer electronics buyer and reseller that works with Apple and retailer JD.com in mainland China. OpenClaw is an AI agent, a tool that can autonomously conduct personal tasks such as sending emails and shopping online.