On the third day after Shen Mu's elixir shop opened, old detective Shi Ying arrived holding a sealed jar. The jar contained a petrified elixir with eight characters engraved on it. Shen Mu touched it and had an asthma attack on the spot. A picture flashed before his eyes: someone died in front of the alchemy furnace, with an iron chain chained around his neck. Wei Lan scanned it ten times with an instrument and said that this thing was at least eight hundred years old. But the rust on the iron chain clearly appeared only this year.
