Go thapa mo matsogong a gago go tlile go dira ka llaga la ka ntle, leo le tla kwagalago le le segiša  gomme la dira mohuta wa legapi. The previous text is in Northern Sotho. Here is a translation to Chinese (Simplified):
你手上的水分会与外层发生反应，这样会形成一层类似外壳的东西，感觉十分有趣。