Don't waste time talking, get to work.
Here's how it breaks down:
* "Talk" represents idle chatter, gossip, or unnecessary discussion.
* "Cook rice" represents a task, work, or something productive.
Essentially, it's saying that talking doesn't get anything done. You need to focus on the task at hand and get to work.
This saying is often used to encourage someone to stop procrastinating or avoid distractions.