Sergeant Hoong interrupted:

"So that was that Your Honour meant by referring to half of the murder being clear! Your Honour had then connected Dark Orchid's report about the General's fourth wife having an unsightly mole on her breast, with the reference in Ding's poem!"

"Exactly", Judge Dee said. "As to the other half of this case, the real killing of the General, I confess that I would probably never have solved that riddle if the old Governor had not signed his name to his deed.

The only conclusion I had arrived at was that the General must have been killed by some mechanical device, for it was absolutely impossible for the killer to have entered or left that sealed room. But I would never have discovered the secret of the writing brush. I am no match for the old Governor's brilliant mind! You will have noticed that after the knife had left the shaft, the coils straightened out along the inside; I would not have seen them even if I had peered inside the shaft.

When during my visit to old Master Crane Robe I learned that 'The Abode of Tranquillity' was the pen name of the old Governor, I remembered having seen that name engraved on the shaft of the brush General Ding had been writing with when he was killed. I thought of Tao Gan's suggestion about the blow-pipe and realized that the hollow shaft of a writing brush could serve the same purpose. The displaced candle taught me that there was some mechanical device inside the brush that was released as soon as the brush was heated. The rest was easy."

"What shall we do if Candidate Ding does not kill himself?", asked Chiao Tai.

"I shall accuse him and his paramour in this tribunal of adultery and torture them until they confess!", Judge Dee answered calmly.

Slowly smoothing his long beard the judge looked at his lieutenants. When no one asked more questions he continued:

"Now I come to our second case, the old Governor's testament."

His lieutenants turned round and looked at the picture on the wall.

"The written testament concealed in the lining", the judge said, "was a false clue deliberately planted there by the old Governor to delude Yoo Kee. The Governor's scheme was successful, for when Yoo Kee had found that document, he did not destroy the scroll but handed it back to Mrs. Yoo. The landscape picture itself contains the real clue, which is much more subtle!"

Judge Dee rose and walked over to the picture. His lieutenants hastily left their seats and stood by his side.

"I vaguely suspected", the judge began, "that there existed some connection between this landscape and the Governor's country estate. That was the main reason why I went out there myself."

"Why should there be any connection?", Tao Gan asked eagerly.

"For the simple reason", Judge Dee replied, "that those were the only two things which the old Governor wished to be preserved at all costs. He took clever precautions to ensure that this scroll picture should not be destroyed after his death, and he gave strict instructions to Yoo Kee that nothing was to be changed on his country estate;

At first I thought that this landscape picture was a disguised map of the country house, indicating the location of a secret wall safe where we would find the Governor's real testament. But during my visit out there I failed to discover the slightest resemblance. Only last night I found the connecting link!"

Judge Dee looked with a smile at his lieutenants. They hung on his lips.

"If you study this landscape carefully", he said, "you will notice some queer points in its composition. There are a number of houses, scattered among the cliffs. Every one of them can be reached by the mountain path, except the largest and most elaborate building here on top right! It lies on the river, but there is no road at all! I concluded that that building must have a special significance.

Now look at the trees! Is there nothing about them that strikes you as peculiar?"

Tao Gan and Sergeant Hoong scrutinized the picture closely. Ma Joong and Chiao Tai had given up. They looked at the judge with fond admiration.

When the sergeant and Tao Gan shook their heads the judge continued:

"All the houses are surrounded by clusters of trees, painted rather carelessly. Only the pine trees are drawn in detail; each trunk stands out clearly against the background.

Now you will notice that there is numerical sequence in those pine trees. Two at the top of the mountain where the path begins, three further down, four where the path crosses the river, and five near the large house on top right. I concluded that these pine trees are landmarks that indicate a route to be followed. The two pine trees on top are the link that connects this picture with the country estate: they represent the pair of pine trees that we saw at the entrance of the maze!"

"Thus this landscape is a guide map to the maze, showing how one reaches a small house or pavilion that the Governor had built inside!", Tao Gan exclaimed.

Judge Dee shook his head.

"No", he said, "not exactly. I agree that it indicates a route to a pavilion inside the maze. Since the Governor went there nearly every day, it is evident that somewhere inside there must be a pavilion where he could read and write. I also agree that this elaborate building represents that pavilion. But I don't agree that it can be reached by following the path of the maze.

The old Governor planned his abode inside the maze as a real secret. He would never leave important documents there if anyone who had sufficient courage and patience to search the maze and follow its regular path could find it. Why did the Governor make such a sharp distinction between the first and the second half of the route. Why indicate the second half by a mountain river?"

"To make it more difficult!", Tao Gan replied promptly. "No", Judge Dee said, "the Governor took special pains to indicate that the place marked by the four pines is an important point. Instead of the regular mountain path, from there on one 's course is indicated by the river. The bridge is a further indication that here there occurs an important change.

I am convinced that at this point one leaves the regular path of the maze, and enters a secret short cut that leads to the hidden pavilion, located not on the real path, but somewhere in between its curves." Tao Gan nodded his agreement.

"What a perfect hiding place!", he exclaimed. "It is safer than any stronghold! If one does not know the key to the secret short cut, one could explore the maze for weeks on end and never find the pavilion. But the Governor and everyone who knew the secret could reach it probably in a few minutes!"

"Yes", Judge Dee said, "your last point is very important. The Governor would not like to walk for half an hour or so along the winding path of the maze every time he went inside. This consideration suggested to me the existence of a secret short cut.

Let us now follow the route indicated on this picture!" The judge pointed with his forefinger to the small house on top of the mountain, with one pine tree on either side. "Here", he said, "is the entrance of the maze. We descend those steps hacked out in the rock, and follow the path downward. The first fork has no meaning, it does not matter whether one turns right or left. Coming to the second fork, three pine trees along the side of the path indicate that we must keep to the left.

Then we arrive at the river. This is the point where we leave the regular path of the maze. The entrance to the secret short cut is marked by four pine trees; I presume that in the maze we shall find the entrance between the second and third tree, right in the middle, just as the river in this picture.

Somewhere along this secret path we shall find five pine trees in two groups of two and three. The Governor's hidden pavilion must be located there!"