Chapter_47_Off_the_Chart

The work order reached the arsenal in the morning. Harbor Defense Council paper, the header reading wall inspection, and under it a line in small characters: four hollow cracks at the south wall foot—tap them all again. Signed Zhou Zhengting, the strokes pressed tight, and beside the signature a second line noting the order's number and its provenance. Da Liu took the order at the door and read it top to bottom, then looked up at Xiao Mao. "Who do we send?"

Xiao Mao pointed at the name in brackets after the job line: the earthworks squad, the old mason. Da Liu handed the order back and slid the door open. Inside, the hands were getting the furnaces lit. The third cannon stood against the wall under its oilcloth. The chalked word on the door panel—RIVET—had gone faint through several rains, and Da Liu brushed the dust off with his cuff as he passed. He didn't re-chalk it.

The old mason arrived with his kit already bundled: two steel rods, two hammers, a water level, eight stakes, half a bag of white lime. He went through it all with his hands behind his back, then picked up a rod and sighted down it, one eye shut. "Tip's gone half a hair dull. I'll grind it on site." Xiao Mao said nothing. He drew that rod out and swapped in the other. The old man took no offense—walked on ahead, hands behind his back. South through the streets the water-carriers were already lined up, the fish stalls were out, and the squabbling over two coppers had the same tune as yesterday.

The Xs at the south wall foot had been drawn in white lime, and the rains had faded them to shadows. Seventeen had been marked last time; now you had to come close to read them all.

The old mason worked down the line, tap by tap, the hammer rising easy, landing solid—a stretch of tapping, then a crouch, then listening. He didn't hurry. Three taps to a mark. Where the wall was solid the sound came back short and the hammer was done the moment it fell; where it was hollow the sound trailed a tail, and he waited for the tail to die before he moved on. Xiao Mao followed with the tally—which marks had grown a tail, which hadn't. At the third stretch on the east end he handed him the hammer, laid himself against the wall, ear to the brick, and listened a long while.

"The ring hangs longer. It didn't, last time." Xiao Mao wrote that down too.

The count came out wrong. Of the seventeen Xs, eleven were still hollow; six new ones had risen where the wall had been solid, unmarked on the lime. And in two places water had seeped out of the mortar joints, wet streaks a man-height long, half a morning in the sun and still not dry. Xiao Mao reported the numbers. The old man didn't get up. He answered from where he lay: "Write it. Set a rod."

The rod went down through the crack. The first foot rang solid. The second, the sound shortened. At the third foot the tip suddenly found nothing, and what came back up the rod was hollow. Xiao Mao held the rod still and beckoned. The old man came over, and the two of them lay along the crack, one behind the other, and neither spoke. Wet earth and damp rose out of the wall foot; the bricks under their knees were cold. Water dripped somewhere inside—one drop, then another, landing on brick, and the landing sounded hollow too.

The old man took the rod and fed it another half foot before drawing it out. Water clung to the tip. Clear water. Xiao Mao caught a drop on his fingertip and it sat there turning, cold enough to sting. The water in the ditches ran muddy yellow. This water was clear enough to show the whorls on the pad of his finger.

"Wrong water," the old mason said. "Ditch water's never clear."

Xiao Mao flicked the drop away, wiped the rod dry, wound it up, and scrubbed his hand twice down his trouser leg. He said nothing.

Just past noon Da Liu brought the old chart over from the harbor office. The order quoted its provenance, the office lent by the book, the keeper of the maps signed it out—three days' loan. The chart spread on a door plank in the shop, corners weighted with stones. A traced copy, the paper yellowed clean through, and in one corner a small flourish: the tracer's own mark. Xiao Mao looked at that first. "Steady hand, whoever traced this." Then he got to work. Twenty-three points; he set them one by one—seventeen old, six new—and when they were all placed he took charcoal and connected them. By the fifth point his hand had slowed. By the tenth it stopped.

The line was straight. From the wall base behind the storehouse lane it ran slanting south, through the wall foot, through the back of the goods yards, straight for the sea. He turned to that stretch of the chart three times, and every inch of it was curves—ditches, one after another, every one of them curved. Three days' loan. First thing, he laid out a clean sheet and traced the whole stretch onto it. The chart went back in the morning; the line would stay in the shop. When he finished he set the two side by side and checked them against each other. Not one point off.

"There's no line like this on the chart," she said.

Stolen story; please report.

The old mason leaned in, squinted through it, straightened up. "Ditches curve. Water doesn't walk a straight road."

"That line wasn't cut by any ditch." Xiao Mao's charcoal touched the head of it. "Someone laid that base—down under, where charts don't record."

The leveling was afternoon work. When the arsenal had gone up on its plaque, the three gun positions had been trued to level, and the benchmark stakes still stood in their old spot behind the shop, tops cased in brass, unrusted. Xiao Mao carried over the water level—two staves and a length of finger-thick copper tubing, filled with water. His father had trued keels with just this: water doesn't humor anyone; water only finds its level.

The two of them carried it along, stretch by stretch, holding the south wall base against the benchmark. Each stretch, he crouched to read the water line in the tube, and read it a long time, then moved on. Three stretches done, he called the numbers: the wall base had dropped. Three fingers. All three stretches, three fingers—not one more, not one less—sunk square, the whole of it together.

"The ground hasn't caved." The old mason crouched by the stake and knocked out his pipe. "A cave-in scatters—broken brick and rubble pour down. This sank as one piece, slow and even. Something under there is holding it up. And whatever holds it is older than the wall."

Nobody picked that up. Xiao Mao stood three fingers upright beside the water level, looked at them, put them away, and wrote the number into his book.

She wrote the report herself. Count of marks, positions, widths, water, elevation, line by line—and at the end, the straight line itself, head and tail marked with bearings, three characters noted along it: hollow beneath. Two copies, one for the shop, one for the Council. He set the pen down, fanned the ink dry, folded both sheets. The old mason had watched for a while, then asked for half a sheet and traced the line for himself, folded it into his coat—a steady hand had drawn it once; he meant to walk it across his own half sheet too. Xiao Mao cut him the half sheet and asked nothing.

The report reached the Harbor Defense Council at dusk. Chen Jin went through it under the lamp, numbers one line at a time. At the line that said three fingers, he stood three fingers upright on the desk, looked, and laid them flat. At the straight line he stopped, pressed a fingertip on the head of it, and held three breaths. Xiao Mao waited at the desk's edge. His first question was the water: "The water seeping in that crack—anyone touch it?"

"Bottled it. Nobody's skin went near it."

Chen Jin nodded, turned the report back to the first page. Only then: "The head of that line—the wall base behind the storehouse lane. There's a crack there. I saw it a month ago. It's wider than your numbers."

Xiao Mao went still. "You saw it. Why didn't you report it?"

"One point doesn't say anything." He pushed the report back across the desk. "Down the mine, a report takes a line, not a point. Yesterday you were holding a pile of points. Today you're holding a line."

The way back ran half a street around. From the shelter quarter came the sound of characters recited—even, measured, through two walls—one voice leading, a crowd following. Xiao Mao slowed to hear a stretch of it. "Second night of school." Chen Jin made a low sound. They walked the rest of the street without another word.

They went to look at the crack by night. A seal strip had been pasted across the empty storehouse door in the back lane—Council work, the paste still wet. The wet streak at the wall foot had grown half a foot longer than by day. Chen Jin crouched, laid his palm flat over the crack, and cold climbed up through his palm—colder than the brick had any right to be. He held three breaths and took his hand back. The light in front of his eyes brightened. The panel had lit itself; he hadn't touched it.

[Faint Sovereign-era signal detected. Source: underground.]

He read it once and pressed it dark. The same tune as the night of the dog tag. That time it was on the tag; this time it was under the ground. Two steps away, Xiao Mao was swinging the hammer on a stake, one blow, another, and saw nothing. "Mind your measuring," Chen Jin said. "The stakes—I'll have men read them every day."

Eight stakes went down along the line. Xiao Mao had his own way with a stake: a punch mark on every stake top, and a short line cut beside it with a knife—the point to count by, the line to place by. Read daily, the stakes would tell whether they moved, and how far; punch mark and cut line don't lie.

The crack itself they closed with half a finger's depth of fine sifted earth—the point wasn't bugs, it was boot soles; a winter of feet would tread the crack out of shape. The water sample went to the wounded' shed. Wen Heng turned the jug in the lamplight a long while, then tested it with a silver needle. "Ditch water's never clear. And this—boiled or not, nobody drinks it." She wrote one line in her little book and kept the jug.

Packing the tools, Xiao Mao asked: "Does the report get a copy to the harbor office? By code, foundation trouble owes them one."

"Leave it off the books," Chen Jin said.

He took that in and went back to the bundling. Chen Jin stood at the shop door and folded the work order into his coat. Only after it was out did he hear the weight of it: this harbor had just got its accounts straight—everything asked for its provenance now, everything in the books, every entry with a place of origin. And his first reach had been to take a thing back off the account. He didn't take it back. The line wasn't fully drawn; what lay three feet down was still unprobed. Paper it black-and-white too soon, and what came wouldn't be men who read stakes.

Tools bundled, the two of them walked back. The moon was behind cloud, and the streets had no lamps. At the shop door the ground gave a muffled boom from somewhere far below—deep, heavy, not in the wall, not in the ditches, coming up from under the feet. The forge hammers had long stopped; the arsenal didn't strike iron at night. Xiao Mao stopped. He looked back across the ground, and went on looking.

"Nobody's forging iron in this city anymore," he said.

Chen Jin didn't answer. He crouched and laid his palm flat on the ground. The ground didn't tremble. But the sound had been real, and pressed to the earth, it was already going deeper.