The boy had not seen a missing auditor. He had seen a man carrying a blue folder.
That distinction arrived in Wanjiru’s message before any photograph. She had been told that a household near the service compound might have information about the afternoon of October 30. The household had not approached the family. A community liaison working with the investigator had spoken to an adult there after making clear that the inquiry concerned a possible sighting, not a request to produce a witness.
Yanchuan read the message on his phone outside the canteen. He wanted to know the child’s age, the height of the window, and whether the folder could have been the one in Yansheng’s equipment photograph. Those questions came to him before the obvious one: did the family want its child involved?
He called An.
“It’s not a confirmed sighting,” she said when he had finished.
“I know.”
“And the boy hasn’t identified anybody.”
“I know that too.”
“Then why are you speaking as if he’s been waiting for us?”
The question stopped him. In his mind, he had already placed the boy at a precise window on a Friday afternoon, holding the answer the adults had overlooked. He had invented the picture before the inquiry supplied one.
That evening Wanjiru explained what she could. The child lived above a shop facing a service road used by several contractors. He had told a parent about a visitor who stopped beneath the awning while workers moved a cart. He remembered the folder because it was the color of his school bag. He did not know the man’s name. The account had been brought forward after a neighbour mentioned that investigators were checking movements near the annex.
“We cannot ask him to remember more by showing him what we hope he saw,” Wanjiru said. “Any further conversation should be handled by someone trained to speak to children, with the appropriate consent.”
Yanchuan thought of his nephew’s bridge. When the joint broke, the boy had pointed to the first loose connection without asking what answer would please anyone. Later, when Yanchuan praised him for noticing, he had been eager to find another fault. A child’s willingness to help could be made into pressure with almost no effort.
“Can his parents decline?” he asked.
“Of course. And if they agree, the process should protect the child. This is not a school competition for the best memory.”
On Saturday he visited Guangzhou. His nephew had spread coloured tape across An’s kitchen floor to make roads for a toy bus. One road led under a chair, another ended at the refrigerator. The boy handed him a ruler and asked him to make a tunnel.
“Who decides where the cars go?” Yanchuan asked.
“Me.”
“And if I want a road to the window?”
“Then you can build your own city.”
An, washing vegetables, looked over her shoulder. Her son was not trying to be wise. He wanted his uncle to stop rearranging his tape.
They made the tunnel. When a wheel caught on its entrance, Yanchuan adjusted the cardboard. The boy objected; he preferred moving the road. They tried both and discovered that either could work if the opening stayed wide enough.
That night An showed Yanchuan the draft public appeal, now three months old. The photograph and case reference were still correct. The sentence about last confirmed contact still named Thursday. The office’s visitor book made Friday worth investigating, not worth declaring.
“People ask whether we’ve found anything,” she said.
“What do you tell them?”
“That we’re following new information and don’t know yet what it means.”
“Does that satisfy anyone?”
“No. Sometimes it doesn’t satisfy me.”
The boy at the window was mentioned nowhere in the appeal. He was not a clue the family owned, and his ordinary afternoon was not a performance to be advertised.
On Monday Amina learned that the liaison had spoken again to the boy’s parent, not to the child. The parent wanted to know whether cooperating would require the family to appear in court, lose time at work, or have strangers visit the shop. The liaison had not pretended to know every answer. She outlined the process and offered time to decide.
Yanchuan caught himself wishing for a decision before the weekend.
Amina heard it in his silence.
“You have people who wait for you to call,” she said. “That family has people who need them to open the shop tomorrow.”
He accepted the correction. It did not make waiting easier.
Meanwhile the investigators asked the compound operator for an inventory of the service road’s cameras and delivery records. The cameras did not cover every window and doorway. A record of cart movement might establish activity on the road; it could not supply a face where no camera had seen one.
A week later Wanjiru forwarded the only conclusion the family was entitled to receive. The parent had agreed to a limited professional interview. The boy described a visitor with a blue folder and a light shirt sometime after school. He had not seen the visitor’s face clearly. He remembered the cart stopping because he had been waiting for his father to return by that road.
The interview did not establish the date independently. October 30 was one of several afternoons on which the shop had taken deliveries. The inquiry would compare the account with those records rather than ask the boy to choose a date.
Yanchuan wrote down what the child had seen. Then he made a second entry for what the child had not been asked to prove.
When his father called that evening, Yanchuan described the new lead without describing the boy. Jianming listened and asked whether there was a reason to travel again.
“Not yet,” Yanchuan said.
“Then don’t make the trip a substitute for being useful.”
He was startled by how much that sounded like An. Perhaps they had always been saying it. Perhaps he had needed months to hear it.
Afterward he opened the photograph of Yansheng in the equipment room. The folder at his brother’s feet was gray. He had remembered it as blue when he first heard the account.
He changed blue folder to folder, color uncertain in his own notes. The child’s account had not changed; only his reading of it had.
Outside his Shenzhen window, a delivery cyclist waited beneath an awning for the traffic to move. Yanchuan watched him without trying to make the moment belong to the case.