An incredible image was captured when Baidu CEO and chairman Robin Li addressed at the Baidu AI Developers Conference Wednesday.

A man went up to the stage and poured a bottle of water on his head.

Li said, "What's your problem?" About 20 seconds later, Li continued his address, saying, "As everyone can see, some unexpected things can happen on the road to artificial intelligence. However, our determination will not change, and we believe AI could change everyone's life."

The man has been placed under the control of security.