The double-sided embroidery of the Su Embroidery Museum in Bangkok, a treasure of the museum, "A Thousand Miles of Rivers and Mountains", suddenly oozes blood. Surveillance shows that the non-genetic heir, Lin Wanru, died suddenly before being skewered, but the autopsy report shows that the cause of death was "excessive shock".
Tang Ren's compass was attached to the blood-stained silk thread: "Seeing silk in Xun Palace, this is the 'Thousands of Silks Leading the Soul' situation in Lu Ban's Book!" Su Chen used ultraviolet light to illuminate the embroidery and found that nano-magnetic powder was mixed in the gold thread - it would form a miniature Tesla coil when heated.
"Look at the direction of the stitches!" Qin Feng suddenly stuttered and pointed at the embroidery. Under the microscope, the stitches formed a Morse code, which was deciphered into the geographical coordinates: 13°45'N, 100°29'E - the ruins of the Zhengwang Temple.
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A disaster struck the stage next to the Zhengwang Temple. Seven bronze hexagram nails were nailed to the charred beams. Tang Ren measured the positions using the Yu Steps: "Qian 6, Zhen 8, this is the 'Thunder Devouring' ominous situation in the Three Essentials of Yang Houses!"
Su Chen scraped off the scorched wood, and the mass spectrometer detected copper phosphide, which would spontaneously combust when exposed to moisture. Qin Feng called up the weather records: "The humidity was 92% on the night of the disaster!" Suddenly, the sound of a three-stringed lute came from the wreckage of the stage, and Tang Ren's compass pointed to the entrance of the underground secret room.
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The stone walls of the secret room are full of lost chapters of "The Exploitation of the Works of Nature". When Tang Ren used cinnabar to make rubbings, the characters "뀗" oxidized into toxic mist when they met air. Su Chen activated the nano-shield and found that the inner wall of the purple clay pot on the stone table was engraved with micro-carvings - a panoramic view of the scene of Lin Wanru's death.
"The pot is a murder weapon!" Qin Feng checked the residue on the pot's spout, "The tea...the caffeine content exceeds the standard by a hundred times!" Tang Ren suddenly threw out the Five Emperors' Coins to smash the pot lid, and the tea residue that fell out was mixed with human blood - it matched the DNA of the blood beads from the Embroidery Hall.
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On a rainstorm night, a century-old teahouse was raided. Tang Ren's folding fan split the heroin disguised as tea cakes. Su Chen found a secret compartment at the bottom of the withering tank, which contained bundles of smuggled goods - each marked with the "Tiangongfang" mark.
"Look at this killing pot!" Qin Feng's thermal imaging device showed that there were layers inside the iron pot. Tang Ren used the "Qianjinzha" method in "Qing Nang Ao Yu" to crack the mechanism, and thirty volumes of Ming Dynasty shipbuilding drawings were clearly visible, one of which was marked with the coordinates of a shipwreck in the South China Sea.
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A dragon boat of the same model as Zheng He's treasure ship suddenly appeared at the bottom of the Chao Phraya River, with a hidden drug mechanism in the mortise and tenon joints of the boat body. Tang Ren used a Luoyang shovel to clamp the linkage gear: "The collision of the two, this is the 'mother-child chain buckle' in the Lu Ban Book!"
Su Shen dived underwater and found Lin Wanru's embroidery needle embedded in the dragon bone. The nano-glove scan showed that the needle eye was engraved with quantum code, which turned out to be a part drawing of a military enterprise after being deciphered. Suddenly, the dragon boat head image turned, revealing a black muzzle——
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"This is the real 'Heavenly Creations'!" The mastermind walked out from the shadows, and turned out to be a mute servant in the teahouse. He tore off the human skin mask, revealing a burned face - a survivor of the stage disaster ten years ago.
Qin Feng suddenly spoke fluently: "You use copper phosphide to set up an array on the stage, and then use theanine to create the illusion of heart paralysis..." The dumb servant laughed wildly and threw out the tea needle. Tang Ren blocked it with a compass, and the magnetic needle ignited the remaining phosphorus powder.
Su Chen took the opportunity to activate the self-destruction device of the dragon boat, and the century-old smuggling network was destroyed in the water column. Three days later, the restored "A Thousand Miles of Rivers and Mountains" was exhibited, and Su Chen found a new clue in the corner of the embroidery - the longitude and latitude formed by the stitches, pointing to the next case that has not happened.
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