With night vision, Tang Ling was unable to determine the substance which was flowing but he was sure that it had similar properties with water.
However, with no color vision, it was difficult to determine what it was, so he could only determine it with other senses. That is smell, taste, touch, and hearing. Hearing was impossible, tasting was was a big no-no; if the substance was not water and instead, was poisonous, he would regret it.
First, he took a sniff and noted that it had an acrid smell. It smelled horrible.
Tang Ling then tried to touch the liquid but after a few seconds, he sensed that his finger was burning and immediately retracted.
"Sssiii..."
Tang Ling looked at his finger, a patch of skin was burnt, leaving only dead skin tissues.
"This has extremely acidic! Only a fe
