Once free of the village and any possible pursuit, the doctor begged to be allowed to remount my horse in the more usual fashion.
‘My stomach aches from being bounced up and down on this nag, and my bag is digging into my shoulder,’ he moaned.
I reined in the steed, and he slid unceremoniously to the ground in a heap. Sitting on the packed earth of the roadway, he began to rifle through the contents of his satchel. One by one he produced small packets and pots from the pouch and stood them on the roadside. He muttered their names as he did so, first finding some twigs and roots.
‘Ahhh. It is safe — my guishi, rougui, jiang.’
Then out came some leaves.
‘ Renshen, dang gui, ma-huang.’ He looked up at me. ‘I can treat fifty-two ailments using these and others. My methods involve the Four Natures of yin and yang — cold, cool, warm and hot. It is important to have an internal balance, you see. Then there are the Five Tastes. These are pungent, sweet, sour, bitter, salty — each with its own functions. Sweet-tasting herbs help harmonize bodily systems, and drain dampness. Do you have any ailments that require treatment?’
I quietly cursed letting him off my horse, and indicated he should remount. But he held up his hand.
‘Just a moment. There is one more item.’
He thrust his hand into his satchel, and felt anxiously around. But his final trawl in the bag was not as successful as before. He produced a broken clay pot and groaned as he examined the interior.
‘My precious zhusha compound! It is almost all gone.’
He clutched his head, and rocked back and forth on the ground like a lost child. I circled him on my horse, and kicked his head with my boot.
‘Get up now, or I will have you over the horse’s back for the whole journey to Pianfu.’
Doctor Sun scrabbled around in the earth for his medicines and crammed them back into his satchel. He then stared fearfully up at me.
‘Pianfu? Who are you? Why are you taking me to Pianfu? I don’t want to go back there.’
He turned on his heels, and marched off back along the track. Tadeusz made as if to cut him off, but I held up my hand to stop him. Instead, I just called after Sun.
‘Go that way if you like. But it will only take you back to the arms of the dead man’s brother. And they looked like pretty hefty arms to me.’
Sun stopped in his tracks and cast a furtive glance around him. As we had stopped in the rocky gorge that led to the village, there was no escape route to either side. It was sheer, and the rocks were crumbling. With a deep sigh, the doctor turned and walked reluctantly back to me. He stuck out an arm and I lifted his skinny frame with ease on to the horse’s back behind me. We continued our journey with Sun clutching me around the waist and lecturing me on immortality.
‘ Waidan, or outer alchemy, necessitates a belief in natural elements being able to change into others. I can perform it using an elixir made up of substances found outside the body, and the preparation involves observing rules about seclusion and purification. Once prepared, the elixir is ingested and brings about physical changes in the body, separate from the soul. I…’
I interrupted him before he drove me mad.
‘If you don’t keep quiet, I will bring about physical changes in your body that you will not find pleasant.’
The rest of our journey was accomplished in blessed silence.
It was early afternoon before we reached Pianfu again. Riding two-up had slowed us down, and anyway I preferred to enter the city as dusk fell. I did not want anyone associated with the prefect to see us. Doctor Sun was our man, and until I had a chance to question him properly, I did not want Li interfering. So rather than ride through the centre of the city, Tadeusz and I skirted round the edge of the place. That made us even later, and it was almost dark as we dismounted. Po Ku took care of the horses, and I dragged the doctor into the courtyard. Lin and Gurbesu emerged from their respective quarters, having heard our arrival. Sun immediately threw himself on the ground at the feet of his fellow Chinee.
‘Master, I beg you to save me from these demons. Look at them. One has only half a face, and the other has fire coming out of his head.’
Lin merely stared down with curiosity at the grovelling supplicant.
‘The men you describe are my esteemed companions, and agents of the Great Khan. He would not take kindly to your description of them. And nor do I.’ He looked up at me. ‘Investigator Zuliani, take this person to my rooms. We will interrogate him there. Bring the bastinado cane.’
Sun had no way of knowing both my and Lin’s dislike of torture, and whimpered at the very threat of corporal punishment.
‘Please master, don’t beat me. I will tell you all you want to know.’
‘I know you will. And it will be very painful as you do so.’
I laughed inwardly at Lin’s ferocious demeanour, knowing it to be feigned. Playing along, I grabbed Sun by his arm and frogmarched him to Lin’s quarters. Tadeusz, meanwhile, plucked from the ground a stick Po Ku used to beat the dust from the matting in Lin’s rooms, and waved it menacingly. Gurbesu ambled back to her room, leaving the boys to their silly games.
Inside the gloomy room, lit only by one lamp that cast large and scary shadows on the walls, Sun fell once again to his knees. He clutched his satchel to him, like some child with a favourite doll, and began to tremble uncontrollably. Lin saw how scared he was and I could tell he was about to relent on his hard man act. He would have reassured the man that we had no intention to do him any harm. But that would have lost us our advantage, and so I thrust myself forward, pushing my face into his.
‘Tell us about Old Geng. We know he died from aconite poisoning. Was it you who killed him?
Sun gasped, and grasped my wrists in a vice-like grip.
‘Please sir, no sir. Yes, I knew Geng Biao. He was one of my patients. But I did not kill him.’
I stared into his eyes, offering him a chance.
‘Hmmm. Not deliberately, perhaps. Though I have heard your skills at healing are not the best in the world. Many have died who should have lived because of your feeble efforts. But we are not interested in them and your unfortunate record of medical care. I want to know about the deliberate murder of Geng.’
‘Sir. I admit I sometimes fail to help those who come to me. It is unfortunate as you say, but I am often confronted with the hopeless cases of people who should have come to me sooner. Can I help it if they expire before my medicines can take effect? If their lungs have been stricken with influenza, even menthol, which is pungent and cool, may not be sufficient to purge the cold. But Geng’s death is another matter altogether. I swear he did not die by my hand. All I did was sell some aconite to be used as a medicine. How can I help it if it was administered in too large a dose?’
‘Who did you sell it to?’
Sun looked almost too scared to say. But when he saw Tadeusz swish the heavy stick through the air, he broke down. With a cry, he gave us the truth.
‘I sold it to his son, Wenbo. He bought three times what he needed for one dose. I told him it was dangerous. It was he who must have killed his father with it.’
TWENTY-ONE
There was nothing else for it — we had to arrest Geng Wenbo. The evidence was now piling up against him. The existence of the incriminating play script in the Geng household could have been said to be circumstantial on its own. And the ‘testimony’ of Nu within it was sketchy to say the least. But put together with Sun’s evidence, it all added up to a very sound case against the boy. It was in fact a much stronger set of facts than those which the prefect had lined up against Jianxu. Of course, Li Wen-Tao would be our major stumbling block, and Lin recognized that.