C435 Purify the Water!

Before him lay the wastewater Su Wangchun had gathered from Lin Yu's small courtyard, now appearing even filthier than before.

Lin Yu gazed at the murky water, momentarily lost in thought. This was not at all what he had anticipated.

Instead of becoming cleaner, the water was increasingly polluted.

Water typically has the ability to self-purify, yet here, that capability had vanished