Pào

She had learned that on a slow afternoon, years earlier, at her grandmother's stone table in the park, while the rain came down on the roof of the little shelter above them.

Her grandmother played xiangqi the way other people breathed: without hurry, without showing off, and never, ever for money, though people often asked. Little Pào had watched her for hours and understood almost nothing, and it made her chest tight with a small, stubborn frustration. Everyone kept telling her the cannon was the cleverest piece on the board, and to her it just looked like a chariot that couldn't make up its mind.

"I don't get it," she'd finally said. "It moves in a line but it can't take things in a line. That's silly."

Her grandmother didn't answer straight away. She turned a red cannon over in her fingers and showed Pào the character carved on it: 炮. Then she turned a black cannon over: 砲.

"Same sound," she said. "Pào. But look at the left side." On the red piece, a little shape like fire. On the black piece, a little shape like a stone. "Long ago, before anyone had gunpowder, this piece was a catapult. It threw stones. And a catapult never throws at what's right in front of it. It throws over something, and lands on what's behind."

Pào had stared at the two carved pieces until the rain sounded different.

"So it isn't broken," she whispered. "It's throwing."

"It's throwing," her grandmother agreed. She placed one piece, then another behind it, then a third beyond. "Watch the middle one. The cannon can't reach across an empty road to strike. But give it something to throw over, one thing, only one, and suddenly it can reach all the way to the end."

She let Pào try it herself. Pào lined up the screen. She made the jump. The far piece came off the board, and something in her chest unlocked, a small, warm click, like a key turning.

"You felt that," her grandmother said, watching her face.

She had. She'd felt the whole game rearrange itself behind her eyes.

She walked to the academy at twelve, because a place that studied the old game of xiangqi ought to have room for the piece that waited.

General Mei, the mentor, met her at the gate and did not ask her to prove she was strong. She set out a board and asked one thing. "Show me the cannon."

Pào didn't answer in words. She set two pieces on a file with a gap between them, then slid one more piece into the gap, a single screen. Then she moved the cannon, let it leap the screen, and lifted the far piece off cleanly.

"And without the screen?" Mei asked.

Pào cleared the middle point. Now the cannon sat with an open road ahead of it and the far piece just sitting there, untouchable. "Then it walks like a chariot, and it can't strike at all," she said. "Same piece. Different world. The whole difference is whether there's one thing standing in between."

"And two things in between?"

Pào put a second piece in the road. "Then it's too far to throw," she said. "One screen. Never two, never none."

Mei looked at the board for a long moment, then at the small cub who had explained the most misunderstood piece in the game without raising her voice. "The catapult in the courtyard needs a keeper," she said. "I think it has found one."

Her corner of the courtyard filled up with students who thought the cannon was broken.

A girl came by one afternoon, arms crossed, board already set. "I hate the cannon," she announced. "It never takes anything. I move it and move it and it just wanders."

Pào almost laughed, because she remembered saying nearly the same thing at a stone table in the rain. "Set up a move you tried," she said.

The girl slid her cannon down an empty file toward an enemy horse. Nothing happened. The horse sat safe and smug.

"Right," Pào said. "Empty road. Nothing to throw over." She placed a lone soldier halfway down the line. "Now try."

The girl frowned, moved the cannon again, and this time it vaulted the soldier and knocked the horse clean off. Her whole face changed.

"It jumped."

"It threw itself," Pào agreed. "The trick isn't moving the cannon harder. It's waiting for the doorway, the one piece already standing where you need it. Sometimes it's yours. Sometimes it's theirs. The cannon doesn't care whose it is."