C253 Purifying Sulfuric Acid

The highly purified concentrated sulfuric acid and the fossil powder that was used to speed up the rate of decay were extremely corrosive. They should be able to deal with Shou Yin.

The entire Guling Mountain seemed to be enveloped by thick smoke, and the whistling northern wind immediately turned off its cover, confirming Miaoyin's speculations. Everything was not a coincidence