You never see a hand, but a called set is face-up for all to read. Study what a player has exposed and name the hand they're chasing. Then you know what's safe to throw.
You will never see another player's hand. But every time someone calls a discard, that set flips face up on their rack and stays there for the rest of the game. It is the loudest tell at the table, one of the easiest tells to learn, and one of the hardest to master.
Here's the trick: an exposed set has to belong to a hand on this year's card. So if you can read their face-up tiles, you can work out what they're chasing, and know what's dangerous to throw them.
Each read has two parts:
1. The section. Which family on the card fits those sets?
2. The line. Open your card and find the exact line. Often more than one line fits. Any of them counts, and we'll show you every match.
Do it for all six and you've cleared the round. Ready, detective?