"Counters," corrected Tarling.
"Yes," nodded Ling Chu, "they are called counters. And then at last I came to the floor where I had seen The Man." He paused. "First I went to the great room where we had met him, and that was locked. I opened it with a key, but it was in darkness, and I knew nobody was there. Then I went along a passage very carefully, because there was a light at the other end, and I came to an office."
"Empty, of course?"
"It was empty," said the Chinaman, "but a light was burning, and the desk cover was open. I thought he must be there, and I slipped behind the bureau, taking the pistol from my pocket. Presently I heard a footstep. I peeped out and saw the big white-faced man."
"Milburgh!" said Tarling.
"So he is called," replied the Chinaman. "He sat at the young man's desk. I knew it was the young man's desk, because there were many pictures upon it and flowers, such as he would have. The big man had his back to me."
"What was he doing?" asked Tarling.
"He was searching the desk, looking for something. Presently I saw him take from one of the drawers, which he opened, an envelope. From where I stood I could see into the drawer, and there were many little things such as tourists buy in China. From the envelope he took the Hong."
Tarling started. He knew of the Hong to which the man referred. It was the little red slip of paper bearing the Chinese characters which was found upon Thornton Lyne's body that memorable morning in Hyde Park.
"Yes, yes," he said eagerly. "What happened then?"