Here is the translation:

  57. Have you studied psychology? As soon as this thought occurred to him, he couldn't help but turn his head to look at Luchu beside him. Would he know what's going on inside? Almost as soon as this question arose in his mind, he had an answer - he must know! Liang Ge and San Kuai were both people he had called over. Although San Kuai was not saying anything, Liang Ge was a certain kind of person, and he should be very familiar with him. At this moment, although his expression was solemn, compared to before when he hadn't seen San Kuai, his anxiety had clearly eased somewhat. It seemed that from San Kuai's words, he had already obtained some information that I couldn't understand.

  His mind was turning over on its own, and he forgot to withdraw his gaze. When his eyes met Luchu's, a puzzled look appeared in them. "What's wrong? Why are you looking at me?" I thought for a moment, then turned my head to ask San Kuai, who was exceptionally quiet: "Didn't they say that he had contracted that strange illness where he slept for several days without waking up? How did he wake up so quickly?"

  As soon as this question came out, Luchu's face stiffened, and he seemed to want to speak but hesitated. I raised an eyebrow - it looked like there was something going on inside.

  I didn't urge him on, but instead turned my head back and walked forward in silence. Only after we had walked more than ten meters did I hear Luchu clear his throat and say: "Xiao Jiu, about San Kuai's illness...".

  I had just started to smile mockingly when San Kuai suddenly piped up from behind us: "What illness? Where did I get sick?" No one paid attention to him, but he quickly reacted and grabbed onto Luchu, looking unhappy: "You're telling lies about me again, aren't you? You and Liang Ge are talking about me behind my back. My illness was clearly caused by someone's sneak attack!"

  Luchu gritted his teeth and said slowly: "Tian Shu Secret Scripture." This finally shut San Kuai up, but his eyes looked very resentful.

  Luchu turned his head back, and our gazes met. There was a hint of guilt in his eyes, and I didn't let him off the hook. I stared at him straight on, and he dodged left and right, eventually unable to bear it any longer. He confessed: "Alright, alright, I'll tell you everything. San Kuai suddenly fell into a coma, and it seemed like he had been given an anesthetic. Liang Ge and I thought this was suspicious, so we made up a story."

  I heard his words and couldn't help but laugh coldly: "Luchu, let me help you explain instead. On the second day after we entered the mountain valley, you and I almost fell off a cliff because of the slippery oil. At that time, you started to suspect me. Later, when Old Wu suddenly foamed at the mouth and the two police officers left together, you thought this was something I had arranged on purpose, trying to trap you. When San Kuai suddenly fell into a coma, you became even more convinced it was me, so you made up a story about him having some strange illness."

  I took a deep breath and continued: "When Old Tie disappeared, I was right under your nose. This thing definitely couldn't have been done by me personally. But you still didn't eliminate your suspicions of me, so during the time after Old Tie's disappearance, you didn't immediately tell me about the tracking device. It seemed like you were searching for something, but in reality, you were secretly observing me, trying to see if I knew anything about what was going on inside."

  I spoke in one breath, and my eyes never left Luchu's face as his expression changed. After a few seconds, I continued: "When we went up to the secret passage on the upper level of the Buddha cave, we found bloodstains. When I wanted to part ways with you, you started to suspect that your judgment might be wrong, so you told me about the tracking device. Most of it was still a test for me."

  At this point, Luchu's stiff expression finally changed, and a bitter smile appeared on his lips: "Xiao Jiu, have you studied psychology?"